chore(deps-dev): Update mkdocs-material requirement from ~=9.6.1 to ~=9.6.3 in /gh-pages (#4766)

Updates the requirements on [mkdocs-material](https://github.com/squidfunk/mkdocs-material) to permit the latest version.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/squidfunk/mkdocs-material/releases">mkdocs-material's releases</a>.</em></p>
<blockquote>
<h2>mkdocs-material-9.6.3</h2>
<ul>
<li>Fixed rendering of arrow heads in Mermaid.js class diagrams</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7960">#7960</a>: Tags plugin crashes on numeric metadata titles</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG">mkdocs-material's changelog</a>.</em></p>
<blockquote>
<p>mkdocs-material-9.6.3 (2025-02-07)</p>
<ul>
<li>Fixed rendering of arrow heads in Mermaid.js class diagrams</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7960">#7960</a>: Tags plugin crashes on numeric metadata titles</li>
</ul>
<p>mkdocs-material-9.6.2 (2025-02-03)</p>
<ul>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7955">#7955</a>: Excessively long words don't break on narrow screens</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7947">#7947</a>: Scope setting interferes with outdated version banner</li>
</ul>
<p>mkdocs-material-9.6.1 (2025-01-31)</p>
<ul>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7943">#7943</a>: Tags plugin crashing due to merge error</li>
</ul>
<p>mkdocs-material-9.6.0 (2025-01-31)</p>
<ul>
<li>Added meta plugin</li>
<li>Rewrite of the tags plugin</li>
<li>Added support for allow lists in tags plugin</li>
<li>Added support for and custom sorting in tags plugin</li>
<li>Added support for related links in blog plugin</li>
<li>Added support for custom index pages in blog plugin</li>
<li>Added support for navigation subtitles</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7924">#7924</a>: Anchors might require two clicks when using instant navigation</li>
</ul>
<p>mkdocs-material-9.5.50 (2025-01-18)</p>
<ul>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7913">#7913</a>: Social plugin renders attribute lists in page title</li>
</ul>
<p>mkdocs-material-9.5.49+insiders-4.53.15 (2025-01-15)</p>
<ul>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7896">#7896</a>: Scoped tags listings not rendering in subsections</li>
</ul>
<p>mkdocs-material-9.5.49 (2024-12-16)</p>
<ul>
<li>Adjusted title color in dark mode for all supported Mermaid.js diagrams</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7803">#7803</a>: Privacy plugin crashes on generated files</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7781">#7781</a>: Mermaid.js flow chart title not visible in dark mode</li>
</ul>
<p>mkdocs-material-9.5.48 (2024-12-08)</p>
<ul>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7774">#7774</a>: Disabling social cards doesn't work</li>
</ul>
<p>mkdocs-material-9.5.47 (2024-12-01)</p>
<ul>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7750">#7750</a>: Numeric tags break search</li>
<li>Fixed <a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7748">#7748</a>: Blog plugin breaks when using future drafts (9.5.45 regression)</li>
</ul>
<p>mkdocs-material-9.5.46 (2024-11-25)</p>

</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/99ef0b9e906dc6f17f8db56d05b5c871b981e05f"><code>99ef0b9</code></a> Prepare 9.6.3 release</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/aaabbfe99eb05f2ff2bd311352e56fe4e8a24336"><code>aaabbfe</code></a> Reverting group plugin fix</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/d4203f65bb59c902251f48bbfe7681e2afecb60e"><code>d4203f6</code></a> Fixed group plugin crashing on ENV vars for enabled setting</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/871e26c8b47b78f4735b16176f281538a54495a6"><code>871e26c</code></a> Documentation (<a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7975">#7975</a>)</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/a2dc66d289262b8adcb1281bfd9a41438ce4b48d"><code>a2dc66d</code></a> Fixed typos</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/bffafccc7247c0bb0aa88898c67b81efb7be6601"><code>bffafcc</code></a> Documentation (<a href="https://redirect.github.com/squidfunk/mkdocs-material/issues/7971">#7971</a>)</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/3ec684c0fef87a42943f81c16c4a7ea9e12fc46e"><code>3ec684c</code></a> Added distribution files</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/a1816aedcb9365f5632b19d48db1c9b5f0f3958c"><code>a1816ae</code></a> Fixed rendering of arrow heads in Mermaid.js class diagrams</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/4861c7d40575b39447522af3530d4f7e49a60c8a"><code>4861c7d</code></a> Fixed tags plugin crashing on numeric title</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/0a9868606c0d59e468546bb01e9a37e0328a0960"><code>0a98686</code></a> Fix embedded mermaid css to fix class diagram arrow heads</li>
<li>Additional commits viewable in <a href="https://github.com/squidfunk/mkdocs-material/compare/9.6.1...9.6.3">compare view</a></li>
</ul>
</details>
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gh-pages/requirements-dev.txt

@@ -1,4 +1,4 @@
 mkdocs~=1.6.1
 mkdocs-awesome-pages-plugin~=2.10.1
-mkdocs-material~=9.6.1
+mkdocs-material~=9.6.3
 mkdocs-git-revision-date-plugin~=0.3.2