Bump mheap/github-action-required-labels from 4 to 5 (#13)

Bumps
[mheap/github-action-required-labels](https://github.com/mheap/github-action-required-labels)
from 4 to 5.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/mheap/github-action-required-labels/releases">mheap/github-action-required-labels's
releases</a>.</em></p>
<blockquote>
<h2>v5</h2>
<p>Tag that always points to the latest commit in the v5.x.x series of
releases</p>
<h2>v4.1.1</h2>
<ul>
<li>Fix build step by switching to <code>ubuntu-latest</code></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/mheap/github-action-required-labels/compare/v4.1.0...v4.1.1">https://github.com/mheap/github-action-required-labels/compare/v4.1.0...v4.1.1</a></p>
<h2>v4.1.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Add newline after the match token in error comments by <a
href="https://github.com/zhimsel"><code>@​zhimsel</code></a> in <a
href="https://redirect.github.com/mheap/github-action-required-labels/pull/55">mheap/github-action-required-labels#55</a></li>
<li>Labels Output by <a
href="https://github.com/jeff-miller-cfa"><code>@​jeff-miller-cfa</code></a>
in <a
href="https://redirect.github.com/mheap/github-action-required-labels/pull/56">mheap/github-action-required-labels#56</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/zhimsel"><code>@​zhimsel</code></a> made
their first contribution in <a
href="https://redirect.github.com/mheap/github-action-required-labels/pull/55">mheap/github-action-required-labels#55</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/mheap/github-action-required-labels/compare/v4.0.0...v4.1.0">https://github.com/mheap/github-action-required-labels/compare/v4.0.0...v4.1.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mheap/github-action-required-labels/commit/4e9ef4ce8c697cf55716ecbf7f13a3d9e0b6ac6a"><code>4e9ef4c</code></a>
Automatic compilation</li>
<li><a
href="https://github.com/mheap/github-action-required-labels/commit/18f57d781fe045548933f7465750a46e9994f1fd"><code>18f57d7</code></a>
Allow labels to be provided one per line in input</li>
<li><a
href="https://github.com/mheap/github-action-required-labels/commit/1b8424df557fae55fef867af22d5d0625fe6742f"><code>1b8424d</code></a>
Update README to v5</li>
<li><a
href="https://github.com/mheap/github-action-required-labels/commit/418d9eb4e79b6ba0ec64538e261b3e87c946f8ba"><code>418d9eb</code></a>
Support running multiple instances without collision (<a
href="https://redirect.github.com/mheap/github-action-required-labels/issues/54">#54</a>)</li>
<li>See full diff in <a
href="https://github.com/mheap/github-action-required-labels/compare/v4...v5">compare
view</a></li>
</ul>
</details>
<br />


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.github/workflows/housekeeping.yml

@@ -68,7 +68,7 @@ jobs:
   required-labels:
     runs-on: ubuntu-latest
     steps:
-      - uses: mheap/github-action-required-labels@v4
+      - uses: mheap/github-action-required-labels@v5
         with:
           mode: minimum
           count: 1