Bump anishathalye/proof-html from 2.1.2 to 2.1.3 (#1678)

Bumps
[anishathalye/proof-html](https://github.com/anishathalye/proof-html)
from 2.1.2 to 2.1.3.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/anishathalye/proof-html/commit/00fd57f3533fefb9a5593e965ba061f254d44153"><code>00fd57f</code></a>
Update Alpine, HTMLProofer, and Nu Html Checker</li>
<li><a
href="https://github.com/anishathalye/proof-html/commit/4022c248a1dcd4b81a84fc4ccec1a6491ce2b569"><code>4022c24</code></a>
Fix build</li>
<li><a
href="https://github.com/anishathalye/proof-html/commit/9670938c39cd4de34788f4527c11eda61b5e6d9c"><code>9670938</code></a>
Tweak formatting</li>
<li>See full diff in <a
href="https://github.com/anishathalye/proof-html/compare/v2.1.2...v2.1.3">compare
view</a></li>
</ul>
</details>
<br />


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</details>

.github/workflows/proof-html.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: anishathalye/[email protected].2
+      - uses: anishathalye/[email protected].3
         with:
           directory: ./