Bump the known_good_semver group with 2 updates (#1553)

Bumps the known_good_semver group with 2 updates:
[serde_json](https://github.com/serde-rs/json) and
[syn](https://github.com/dtolnay/syn).

Updates `serde_json` from 1.0.106 to 1.0.107
<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>v1.0.107</h2>
<ul>
<li>impl IntoDeserializer for &amp;RawValue (<a
href="https://redirect.github.com/serde-rs/json/issues/1071">#1071</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/serde-rs/json/commit/b6e113f2036c52e994ca805e530ee4ffae791f71"><code>b6e113f</code></a>
Release 1.0.107</li>
<li><a
href="https://github.com/serde-rs/json/commit/00626a0a95b3d4cee8d57709f0acc804c1296716"><code>00626a0</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1073">#1073</a>
from dtolnay/rawvalue</li>
<li><a
href="https://github.com/serde-rs/json/commit/b9d296f87d6081afdd590d5a6006737db961302b"><code>b9d296f</code></a>
IntoDeserializer for &amp;RawValue</li>
<li><a
href="https://github.com/serde-rs/json/commit/4ea34a2566ba82a2e602526d0919d23e88c9e5ef"><code>4ea34a2</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1072">#1072</a>
from dtolnay/rawvalue</li>
<li><a
href="https://github.com/serde-rs/json/commit/fe30766ae5c79bfb670b2de1c5596e6e11e22f8c"><code>fe30766</code></a>
Support deserializing from &amp;RawValue</li>
<li><a
href="https://github.com/serde-rs/json/commit/2c22077f0e2decfda5cdfd5821c5f9547d584b76"><code>2c22077</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1062">#1062</a>
from osiewicz/remove_build_rs</li>
<li><a
href="https://github.com/serde-rs/json/commit/04f7758b6eae935237574b25a1e63cf5e281e19e"><code>04f7758</code></a>
fixup! chore: Remove no_btreemap_get_key_value and
no_btreemap_remove_entry.</li>
<li><a
href="https://github.com/serde-rs/json/commit/83bdc5fd4213d94201a3d9ad0f2943da7eba1dd6"><code>83bdc5f</code></a>
Omit return keyword in <code>remove_entry</code></li>
<li><a
href="https://github.com/serde-rs/json/commit/89a274195680d3ea6a2b442ff633b81ccf60bbe4"><code>89a2741</code></a>
Revert &quot;Remove limb_width32 and limb_width64 features&quot;</li>
<li><a
href="https://github.com/serde-rs/json/commit/16e04ceeddfdfad18fb1ae8530695a318fa9bc02"><code>16e04ce</code></a>
fixup! Remove limb_width32 and limb_width64 features</li>
<li>See full diff in <a
href="https://github.com/serde-rs/json/compare/v1.0.106...v1.0.107">compare
view</a></li>
</ul>
</details>
<br />

Updates `syn` from 2.0.32 to 2.0.33
<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>2.0.33</h2>
<ul>
<li>Special handling for the <code>(/*ERROR*/)</code> placeholder that
rustc uses for macros that fail to expand</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/syn/commit/5e3f55e684b7e33424b9f551105463418b196eb4"><code>5e3f55e</code></a>
Release 2.0.33</li>
<li><a
href="https://github.com/dtolnay/syn/commit/3e04809f5218c6d5fb2b09a6c55933e785825c75"><code>3e04809</code></a>
Pull in proc-macro2 error placeholder change</li>
<li><a
href="https://github.com/dtolnay/syn/commit/2cd5608a4c37810bb0947b0c161a20695b3ce487"><code>2cd5608</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/syn/issues/1508">#1508</a>
from dtolnay/error</li>
<li><a
href="https://github.com/dtolnay/syn/commit/84cfe09484f6468bc85fb01db11c6a10fcb2d988"><code>84cfe09</code></a>
Fall through to 'Unrecognized literal' error</li>
<li><a
href="https://github.com/dtolnay/syn/commit/a80570c81bf15c9afcf8e2470ab06f60f7a8183d"><code>a80570c</code></a>
Parse rustc's representation of macro expansion error</li>
<li>See full diff in <a
href="https://github.com/dtolnay/syn/compare/2.0.32...2.0.33">compare
view</a></li>
</ul>
</details>
<br />


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