Bumps the known_good_semver group with 4 updates in the / directory:
[quote](https://github.com/dtolnay/quote),
[serde](https://github.com/serde-rs/serde),
[serde_json](https://github.com/serde-rs/json) and
[syn](https://github.com/dtolnay/syn).

Updates `quote` from 1.0.36 to 1.0.37
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/quote/releases">quote's
releases</a>.</em></p>
<blockquote>
<h2>1.0.37</h2>
<ul>
<li>Implement ToTokens for CStr and CString (<a
href="https://redirect.github.com/dtolnay/quote/issues/283">#283</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/quote/commit/b1ebffa035363a430862e033aa3268e8cb17affa"><code>b1ebffa</code></a>
Release 1.0.37</li>
<li><a
href="https://github.com/dtolnay/quote/commit/43acd77961424b3cb5035688f74d14d556eefe90"><code>43acd77</code></a>
Delete unneeded use of <code>ref</code></li>
<li><a
href="https://github.com/dtolnay/quote/commit/9382c2182ea10f8e0f90d1e5f15ca3f20a777dff"><code>9382c21</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/quote/issues/283">#283</a>
from dtolnay/cstr</li>
<li><a
href="https://github.com/dtolnay/quote/commit/6ac432877bbfe43892677e32af7e3f0e28b6333e"><code>6ac4328</code></a>
Add C string tests</li>
<li><a
href="https://github.com/dtolnay/quote/commit/9fb0591a17893eea81260351c6eb431e1fd83524"><code>9fb0591</code></a>
Implement ToTokens for CStr and CString</li>
<li><a
href="https://github.com/dtolnay/quote/commit/ba7a9d08c9acba8ae97926dcc18822b20441c0fa"><code>ba7a9d0</code></a>
Organize test imports</li>
<li><a
href="https://github.com/dtolnay/quote/commit/aa9970f9838a5b6dd5438c662921470f873e2b3a"><code>aa9970f</code></a>
Inline the macro that generates primitive impls</li>
<li><a
href="https://github.com/dtolnay/quote/commit/ba411091c98c311526774adde73e724448836337"><code>ba41109</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/quote/issues/282">#282</a>
from dtolnay/tokens</li>
<li><a
href="https://github.com/dtolnay/quote/commit/c77340a4c6869690ad7b40069e8ca1cb90e4abb8"><code>c77340a</code></a>
Consistently use 'tokens' as the name of the &amp;mut TokenStream
arg</li>
<li><a
href="https://github.com/dtolnay/quote/commit/a4a0abf12fa0137eca5aaa74fe88ca6694e78746"><code>a4a0abf</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/quote/issues/281">#281</a>
from dtolnay/char</li>
<li>Additional commits viewable in <a
href="https://github.com/dtolnay/quote/compare/1.0.36...1.0.37">compare
view</a></li>
</ul>
</details>
<br />

Updates `serde` from 1.0.206 to 1.0.209
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/serde-rs/serde/releases">serde's
releases</a>.</em></p>
<blockquote>
<h2>v1.0.209</h2>
<ul>
<li>Fix deserialization of empty structs and empty tuples inside of
untagged enums (<a
href="https://redirect.github.com/serde-rs/serde/issues/2805">#2805</a>,
thanks <a
href="https://github.com/Mingun"><code>@​Mingun</code></a>)</li>
</ul>
<h2>v1.0.208</h2>
<ul>
<li>Support serializing and deserializing unit structs in a
<code>flatten</code> field (<a
href="https://redirect.github.com/serde-rs/serde/issues/2802">#2802</a>,
thanks <a
href="https://github.com/jonhoo"><code>@​jonhoo</code></a>)</li>
</ul>
<h2>v1.0.207</h2>
<ul>
<li>Improve interactions between <code>flatten</code> attribute and
<code>skip_serializing</code>/<code>skip_deserializing</code> (<a
href="https://redirect.github.com/serde-rs/serde/issues/2795">#2795</a>,
thanks <a
href="https://github.com/Mingun"><code>@​Mingun</code></a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/serde-rs/serde/commit/30752ac4ffdaa284606eda34055ad185e28c5499"><code>30752ac</code></a>
Release 1.0.209</li>
<li><a
href="https://github.com/serde-rs/serde/commit/b84e6ca4f5fef69b3de985c586a07b1246f3eb9a"><code>b84e6ca</code></a>
Improve wording of PR 2805 comments</li>
<li><a
href="https://github.com/serde-rs/serde/commit/87a2fb0f1a2774ea5bb20c0ed988b9ba57fc8166"><code>87a2fb0</code></a>
Wrap comments from PR 2805 to 80 columns</li>
<li><a
href="https://github.com/serde-rs/serde/commit/9eaf7b9824f2082c50d17ad22b786322dc283a61"><code>9eaf7b9</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/serde/issues/2805">#2805</a>
from Mingun/untagged-tests</li>
<li><a
href="https://github.com/serde-rs/serde/commit/7bde100237875d4f435de5ad90074b0479c37486"><code>7bde100</code></a>
Replace MapRefDeserializer with value::MapDeserializer</li>
<li><a
href="https://github.com/serde-rs/serde/commit/da7fc795ee654252effa232a62a5a1e6d4f551ee"><code>da7fc79</code></a>
Fix deserialization of empty struct variant in untagged enums</li>
<li><a
href="https://github.com/serde-rs/serde/commit/4c5fec1363d363f995375426f72db11c28f357c1"><code>4c5fec1</code></a>
Test special cases that reaches SeqRefDeserializer::deserialize_any
len==0 co...</li>
<li><a
href="https://github.com/serde-rs/serde/commit/6588b0ad3777f7ad930d68ab4b9ec5b9c25398e0"><code>6588b0a</code></a>
Cover Content::Seq case in VariantRefDeserializer::struct_variant</li>
<li><a
href="https://github.com/serde-rs/serde/commit/0093f74cfee5ee3239514a7aad5fb44843eddcdd"><code>0093f74</code></a>
Split test newtype_enum into four tests for each variant</li>
<li><a
href="https://github.com/serde-rs/serde/commit/171c6da57af712cfcf01c6c124b14cabfca364ba"><code>171c6da</code></a>
Complete coverage of
ContentRefDeserializer::deserialize_newtype_struct</li>
<li>Additional commits viewable in <a
href="https://github.com/serde-rs/serde/compare/v1.0.206...v1.0.209">compare
view</a></li>
</ul>
</details>
<br />

Updates `serde_derive` from 1.0.206 to 1.0.209
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/serde-rs/serde/releases">serde_derive's
releases</a>.</em></p>
<blockquote>
<h2>v1.0.209</h2>
<ul>
<li>Fix deserialization of empty structs and empty tuples inside of
untagged enums (<a
href="https://redirect.github.com/serde-rs/serde/issues/2805">#2805</a>,
thanks <a
href="https://github.com/Mingun"><code>@​Mingun</code></a>)</li>
</ul>
<h2>v1.0.208</h2>
<ul>
<li>Support serializing and deserializing unit structs in a
<code>flatten</code> field (<a
href="https://redirect.github.com/serde-rs/serde/issues/2802">#2802</a>,
thanks <a
href="https://github.com/jonhoo"><code>@​jonhoo</code></a>)</li>
</ul>
<h2>v1.0.207</h2>
<ul>
<li>Improve interactions between <code>flatten</code> attribute and
<code>skip_serializing</code>/<code>skip_deserializing</code> (<a
href="https://redirect.github.com/serde-rs/serde/issues/2795">#2795</a>,
thanks <a
href="https://github.com/Mingun"><code>@​Mingun</code></a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/serde-rs/serde/commit/30752ac4ffdaa284606eda34055ad185e28c5499"><code>30752ac</code></a>
Release 1.0.209</li>
<li><a
href="https://github.com/serde-rs/serde/commit/b84e6ca4f5fef69b3de985c586a07b1246f3eb9a"><code>b84e6ca</code></a>
Improve wording of PR 2805 comments</li>
<li><a
href="https://github.com/serde-rs/serde/commit/87a2fb0f1a2774ea5bb20c0ed988b9ba57fc8166"><code>87a2fb0</code></a>
Wrap comments from PR 2805 to 80 columns</li>
<li><a
href="https://github.com/serde-rs/serde/commit/9eaf7b9824f2082c50d17ad22b786322dc283a61"><code>9eaf7b9</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/serde/issues/2805">#2805</a>
from Mingun/untagged-tests</li>
<li><a
href="https://github.com/serde-rs/serde/commit/7bde100237875d4f435de5ad90074b0479c37486"><code>7bde100</code></a>
Replace MapRefDeserializer with value::MapDeserializer</li>
<li><a
href="https://github.com/serde-rs/serde/commit/da7fc795ee654252effa232a62a5a1e6d4f551ee"><code>da7fc79</code></a>
Fix deserialization of empty struct variant in untagged enums</li>
<li><a
href="https://github.com/serde-rs/serde/commit/4c5fec1363d363f995375426f72db11c28f357c1"><code>4c5fec1</code></a>
Test special cases that reaches SeqRefDeserializer::deserialize_any
len==0 co...</li>
<li><a
href="https://github.com/serde-rs/serde/commit/6588b0ad3777f7ad930d68ab4b9ec5b9c25398e0"><code>6588b0a</code></a>
Cover Content::Seq case in VariantRefDeserializer::struct_variant</li>
<li><a
href="https://github.com/serde-rs/serde/commit/0093f74cfee5ee3239514a7aad5fb44843eddcdd"><code>0093f74</code></a>
Split test newtype_enum into four tests for each variant</li>
<li><a
href="https://github.com/serde-rs/serde/commit/171c6da57af712cfcf01c6c124b14cabfca364ba"><code>171c6da</code></a>
Complete coverage of
ContentRefDeserializer::deserialize_newtype_struct</li>
<li>Additional commits viewable in <a
href="https://github.com/serde-rs/serde/compare/v1.0.206...v1.0.209">compare
view</a></li>
</ul>
</details>
<br />

Updates `serde_json` from 1.0.124 to 1.0.127
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/serde-rs/json/releases">serde_json's
releases</a>.</em></p>
<blockquote>
<h2>1.0.127</h2>
<ul>
<li>Add more removal methods to OccupiedEntry (<a
href="https://redirect.github.com/serde-rs/json/issues/1179">#1179</a>,
thanks <a
href="https://github.com/GREsau"><code>@​GREsau</code></a>)</li>
</ul>
<h2>1.0.126</h2>
<ul>
<li>Improve string parsing on targets that use 32-bit pointers but also
have fast 64-bit integer arithmetic, such as
aarch64-unknown-linux-gnu_ilp32 and x86_64-unknown-linux-gnux32 (<a
href="https://redirect.github.com/serde-rs/json/issues/1182">#1182</a>,
thanks <a href="https://github.com/CryZe"><code>@​CryZe</code></a>)</li>
</ul>
<h2>1.0.125</h2>
<ul>
<li>Speed up \uXXXX parsing and improve handling of unpaired surrogates
when deserializing to bytes (<a
href="https://redirect.github.com/serde-rs/json/issues/1172">#1172</a>,
<a
href="https://redirect.github.com/serde-rs/json/issues/1175">#1175</a>,
thanks <a
href="https://github.com/purplesyringa"><code>@​purplesyringa</code></a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/serde-rs/json/commit/5ebf65cc480f90714c94f82099ca9161d80cbb10"><code>5ebf65c</code></a>
Release 1.0.127</li>
<li><a
href="https://github.com/serde-rs/json/commit/f287a3b1a93ecb1a11cee31cb638bd9523a58add"><code>f287a3b</code></a>
Merge pull request 1179 from GREsau/patch-1</li>
<li><a
href="https://github.com/serde-rs/json/commit/ec980b02774abbff12fd3e26b0a1582eb14dcef7"><code>ec980b0</code></a>
Release 1.0.126</li>
<li><a
href="https://github.com/serde-rs/json/commit/e6282b0c479947805a33c7f167b1d19dd4c7ad4f"><code>e6282b0</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1184">#1184</a>
from serde-rs/fastarithmetic</li>
<li><a
href="https://github.com/serde-rs/json/commit/ffc4a43453029cdc5603cfe3ef08414488fd45de"><code>ffc4a43</code></a>
Improve cfg names for fast arithmetic</li>
<li><a
href="https://github.com/serde-rs/json/commit/4b1048d0ecc4d326d6657531689513f182a4f850"><code>4b1048d</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1183">#1183</a>
from serde-rs/arithmetic</li>
<li><a
href="https://github.com/serde-rs/json/commit/f268173a9fb1f5f8a80f47af62b564525cf33764"><code>f268173</code></a>
Unify chunk size choice between float and string parsing</li>
<li><a
href="https://github.com/serde-rs/json/commit/fec03769743c3f0ceb6b5b56d91321fdc856dff2"><code>fec0376</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1182">#1182</a>
from CryZe/chunk-64bit</li>
<li><a
href="https://github.com/serde-rs/json/commit/3d837e1cc4a0f1df56ba6645c3b6d144768b5d9d"><code>3d837e1</code></a>
Ensure the SWAR chunks are 64-bit in more cases</li>
<li><a
href="https://github.com/serde-rs/json/commit/11fc61c7af7b59ea80fb2ef7d78db94465dfbd54"><code>11fc61c</code></a>
Add <code>OccupiedEntry::shift_remove()</code> and
<code>swap_remove()</code></li>
<li>Additional commits viewable in <a
href="https://github.com/serde-rs/json/compare/v1.0.124...1.0.127">compare
view</a></li>
</ul>
</details>
<br />

Updates `syn` from 2.0.61 to 2.0.65
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/syn/releases">syn's
releases</a>.</em></p>
<blockquote>
<h2>2.0.65</h2>
<ul>
<li>Optimize the implementation of <code>Fold</code> to compile faster
(<a
href="https://redirect.github.com/dtolnay/syn/issues/1666">#1666</a>, <a
href="https://redirect.github.com/dtolnay/syn/issues/1667">#1667</a>, <a
href="https://redirect.github.com/dtolnay/syn/issues/1668">#1668</a>)</li>
</ul>
<h2>2.0.64</h2>
<ul>
<li>Support using ParseBuffer across <code>catch_unwind</code> (<a
href="https://redirect.github.com/dtolnay/syn/issues/1646">#1646</a>)</li>
<li>Validate that the expression in a let-else ends in brace as required
by rustc (<a
href="https://redirect.github.com/dtolnay/syn/issues/1648">#1648</a>, <a
href="https://redirect.github.com/dtolnay/syn/issues/1649">#1649</a>)</li>
<li>Legalize invalid const generic arguments by wrapping in braces (<a
href="https://redirect.github.com/dtolnay/syn/issues/1654">#1654</a>, <a
href="https://redirect.github.com/dtolnay/syn/issues/1655">#1655</a>)</li>
<li>Fix some expression precedence edge cases involving
<code>break</code> and <code>return</code> in loop headers (<a
href="https://redirect.github.com/dtolnay/syn/issues/1656">#1656</a>)</li>
<li>Always print closure bodies with a brace when the closure has an
explicit return type (<a
href="https://redirect.github.com/dtolnay/syn/issues/1658">#1658</a>)</li>
<li>Automatically insert necessary parentheses in ToTokens for Expr when
required by expression precedence (<a
href="https://redirect.github.com/dtolnay/syn/issues/1659">#1659</a>)</li>
<li>Support struct literal syntax in match guard expressions (<a
href="https://redirect.github.com/dtolnay/syn/issues/1662">#1662</a>)</li>
</ul>
<h2>2.0.63</h2>
<ul>
<li>Parse and print long if-else-if chains without reliance on deep
recursion to avoid overflowing stack (<a
href="https://redirect.github.com/dtolnay/syn/issues/1644">#1644</a>, <a
href="https://redirect.github.com/dtolnay/syn/issues/1645">#1645</a>)</li>
</ul>
<h2>2.0.62</h2>
<ul>
<li>Reject invalid unparenthesized range and comparison operator
expressions (<a
href="https://redirect.github.com/dtolnay/syn/issues/1642">#1642</a>, <a
href="https://redirect.github.com/dtolnay/syn/issues/1643">#1643</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/syn/commit/9f2371eefa6f681b53e4d74458d86dd41673227f"><code>9f2371e</code></a>
Release 2.0.65</li>
<li><a
href="https://github.com/dtolnay/syn/commit/4cd181325f3488c47866f15966977682be610da1"><code>4cd1813</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/syn/issues/1668">#1668</a>
from dtolnay/foldhelper</li>
<li><a
href="https://github.com/dtolnay/syn/commit/ed54092bcea6798ab0b5ed7aca6755f8918fc79e"><code>ed54092</code></a>
Eliminate gen::helper module</li>
<li><a
href="https://github.com/dtolnay/syn/commit/eacc8ab1b98b590df3ce9462510fd755cddf6762"><code>eacc8ab</code></a>
Eliminate FoldHelper trait</li>
<li><a
href="https://github.com/dtolnay/syn/commit/6e20bb8d7799d0f4c34c144e80b3bd1b6e9afd27"><code>6e20bb8</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/syn/issues/1667">#1667</a>
from dtolnay/punctuatedfold</li>
<li><a
href="https://github.com/dtolnay/syn/commit/9d95cab6d332d08903538d5ce3d6e47c1598912e"><code>9d95cab</code></a>
Optimize punctuated::fold</li>
<li><a
href="https://github.com/dtolnay/syn/commit/82ffe86c2b721b9985edb6f368e7366bd202bc5b"><code>82ffe86</code></a>
Move Punctuated fold helper to punctuated module</li>
<li><a
href="https://github.com/dtolnay/syn/commit/3dfacc1538f655d33c5c8037b14669149bcd81cd"><code>3dfacc1</code></a>
Ignore manual_map clippy lint</li>
<li><a
href="https://github.com/dtolnay/syn/commit/7273aa77aa09ee2562b279a5d9495a212d9c0876"><code>7273aa7</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/syn/issues/1666">#1666</a>
from dtolnay/foldhelper</li>
<li><a
href="https://github.com/dtolnay/syn/commit/8124c0eb99e11cae036d2c967f91f0c456c50368"><code>8124c0e</code></a>
Generate fewer monomorphizations in Fold</li>
<li>Additional commits viewable in <a
href="https://github.com/dtolnay/syn/compare/2.0.61...2.0.65">compare
view</a></li>
</ul>
</details>
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