Bump paritytech/review-bot from 2.3.0 to 2.4.0 (#3119)

Bumps [paritytech/review-bot](https://github.com/paritytech/review-bot)
from 2.3.0 to 2.4.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/paritytech/review-bot/releases">paritytech/review-bot's
releases</a>.</em></p>
<blockquote>
<h2>v2.4.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Updated node and dependencies by <a
href="https://github.com/Bullrich"><code>@​Bullrich</code></a> in <a
href="https://redirect.github.com/paritytech/review-bot/pull/111">paritytech/review-bot#111</a></li>
<li>Refactor of failed reviews objects by <a
href="https://github.com/Bullrich"><code>@​Bullrich</code></a> in <a
href="https://redirect.github.com/paritytech/review-bot/pull/112">paritytech/review-bot#112</a></li>
<li>Added required score grouping to fellows reviews by <a
href="https://github.com/Bullrich"><code>@​Bullrich</code></a> in <a
href="https://redirect.github.com/paritytech/review-bot/pull/113">paritytech/review-bot#113</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/paritytech/review-bot/compare/v2.3.1...v2.4.0">https://github.com/paritytech/review-bot/compare/v2.3.1...v2.4.0</a></p>
<h2>v2.3.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Fellows: Added search of super identity by <a
href="https://github.com/Bullrich"><code>@​Bullrich</code></a> in <a
href="https://redirect.github.com/paritytech/review-bot/pull/108">paritytech/review-bot#108</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/paritytech/review-bot/compare/v2.3.0...v2.3.1">https://github.com/paritytech/review-bot/compare/v2.3.0...v2.3.1</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/paritytech/review-bot/commit/280018363a131c5b59fcdb9c6f1a85a50bdb31e9"><code>2800183</code></a>
Added required score grouping to fellows reviews (<a
href="https://redirect.github.com/paritytech/review-bot/issues/113">#113</a>)</li>
<li><a
href="https://github.com/paritytech/review-bot/commit/53718073fee3b3af31a9d1bba9c900d989699e55"><code>5371807</code></a>
Refactor of failed reviews objects (<a
href="https://redirect.github.com/paritytech/review-bot/issues/112">#112</a>)</li>
<li><a
href="https://github.com/paritytech/review-bot/commit/5f58f48fed7d174d382989940cbbf47dbd5ee41e"><code>5f58f48</code></a>
Updated node and dependencies (<a
href="https://redirect.github.com/paritytech/review-bot/issues/111">#111</a>)</li>
<li><a
href="https://github.com/paritytech/review-bot/commit/4ea00441b921cfdbbd47dcd95f1f6e3e0ab0b691"><code>4ea0044</code></a>
Fellows: Added search of super identity (<a
href="https://redirect.github.com/paritytech/review-bot/issues/108">#108</a>)</li>
<li>See full diff in <a
href="https://github.com/paritytech/review-bot/compare/v2.3.0...v2.4.0">compare
view</a></li>
</ul>
</details>
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