chore(deps-dev): Update mkdocs-material requirement from ~=9.0.12 to …

…~=9.0.15 in /gh-pages (#3981)

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-9.0.15</h2>
<ul>
<li>Updated Chinese (Traditional) translations</li>
<li>Updated Hebrew translations</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-9.1.0 (2023-02-??)</p>
<ul>
<li>Docker image now also built for arm64 and armv7</li>
<li>Updated Chinese (Taiwanese) translations</li>
<li>Generalized tag identifier implementation</li>
<li>Fixed flickering of header shadow on load</li>
<li>Fixed occasional flickering of announcement bar</li>
</ul>
<p>mkdocs-material-9.0.15 (2023-02-26)</p>
<ul>
<li>Updated Chinese (Traditional) translations</li>
<li>Updated Hebrew translations</li>
</ul>
<p>mkdocs-material-9.0.14+insiders-4.32.1 (2023-02-23)</p>
<ul>
<li>Fixed code block spans interfering with copying</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5077">#5077</a>: Privacy plugin breaks image alt text encoding</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5079">#5079</a>: Privacy plugin removing rel=me on external links</li>
</ul>
<p>mkdocs-material-9.0.14 (2023-02-23)</p>
<ul>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5072">#5072</a>: Rendering bug on navigation expand button in Firefox</li>
</ul>
<p>mkdocs-material-9.0.13+insiders-4.32.0 (2023-02-19)</p>
<ul>
<li>Added support for custom selectors for code annotations</li>
<li>Added support for code line range selection for better sharing</li>
</ul>
<p>mkdocs-material-9.0.13+insiders-4.31.0 (2023-02-18)</p>
<ul>
<li>Added support for table of contents on blog index and archive pages</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/4512">#4512</a>: Allow custom search field boosts (experimental)</li>
</ul>
<p>mkdocs-material-9.0.13 (2023-02-18)</p>
<ul>
<li>Updated Uzbek translations</li>
<li>Switched back to pre-9.0.0 headline detection in content partial</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5062">#5062</a>: Version warning not readable when using slate scheme</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5061">#5061</a>: Improved discernibility of table row hover color</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5034">#5034</a>: Sequence actors in Mermaid diagrams not color-abiding</li>
<li>Fixed <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/4919">#4919</a>: Allow to hide version warning in multiple versions</li>
</ul>
<p>mkdocs-material-9.0.12+insiders-4.30.2 (2023-02-13)</p>
<ul>
<li>Fixed privacy plugin excludes not working (4.30.0 regression)</li>
</ul>
<p>mkdocs-material-9.0.12+insiders-4.30.1 (2023-02-12)</p>
<ul>
<li>Fixed privacy plugin not handling static templates e.g. 404.html</li>
</ul>

</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/0f74615dc97e973eb83b4ade7d70ee68ad2550d7"><code>0f74615</code></a> Merge branch 'master' of github.com:squidfunk/mkdocs-material</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/a90f176e306c7617f0ce614c47f380060774e262"><code>a90f176</code></a> Prepare 9.0.15 release</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/175793163258367eb68a9fb4910785b6bc09778b"><code>1757931</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5088">#5088</a> from crazy-max/ci-refactor</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/8696f841bcd3fe6e30812982daa080f9131aa29a"><code>8696f84</code></a> Merge branch 'master' of github.com:squidfunk/mkdocs-material</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/f3ae326e1a620e6ef84f37d41f5bf653f677f1a7"><code>f3ae326</code></a> Documentation</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/01377d23e34d0509c1e1de7b68362a396012f666"><code>01377d2</code></a> ci: bump docker/build-push-action to v4</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/cc0b4c5ec309658cff0143748d08fe050787ba2a"><code>cc0b4c5</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/squidfunk/mkdocs-material/issues/5085">#5085</a> from mark-heptinstall/FixEditUriExample</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/a84029906521400d8438c0dd06e78aba91a6a574"><code>a840299</code></a> Updated Chinese (Traditional) translations</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/3e96638d462b71551c27ea05863f74576fc578b6"><code>3e96638</code></a> Merge branch 'master' of github.com:squidfunk/mkdocs-material</li>
<li><a href="https://github.com/squidfunk/mkdocs-material/commit/02f6699c34801c063d8d52515d412015d020047e"><code>02f6699</code></a> Updated Hebrew translations</li>
<li>Additional commits viewable in <a href="https://github.com/squidfunk/mkdocs-material/compare/9.0.12...9.0.15">compare view</a></li>
</ul>
</details>
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</details>

gh-pages/requirements-dev.txt

@@ -1,4 +1,4 @@
 mkdocs~=1.4.2
 mkdocs-awesome-pages-plugin~=2.8.0
-mkdocs-material~=9.0.12
+mkdocs-material~=9.0.15
 mkdocs-git-revision-date-plugin~=0.3.2