build(deps-dev): Bump autoprefixer from 10.4.21 to 10.4.22 in /docs (#1404)

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from
10.4.21 to 10.4.22.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/autoprefixer/releases">autoprefixer's
releases</a>.</em></p>
<blockquote>
<h2>10.4.22</h2>
<ul>
<li>Fixed <code>stretch</code> prefixes on new Can I Use database.</li>
<li>Updated <code>fraction.js</code>.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md">autoprefixer's
changelog</a>.</em></p>
<blockquote>
<h2>10.4.22</h2>
<ul>
<li>Fixed <code>stretch</code> prefixes on new Can I Use database.</li>
<li>Updated <code>fraction.js</code>.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/postcss/autoprefixer/commit/73dc62c779bf51f2883f9541dc62fd164262e872"><code>73dc62c</code></a>
Release 10.4.22 version</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/9973c59f4880abff46c94fd5554e7e4ea194b549"><code>9973c59</code></a>
Lock CI action versions</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/4b4feca71abf7596d978fe7a1e048dec1608d740"><code>4b4feca</code></a>
Fix Node.js 10 on CI</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/15c21d3a7c626ec8269fdb926ed76e729593f09e"><code>15c21d3</code></a>
Fix old Node.js CI</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/27523c1c560933adfb5f8e29184a85b45ed60c87"><code>27523c1</code></a>
Update fraction.js</li>
<li><a
href="https://github.com/postcss/autoprefixer/commit/88a0d3e0f8034eb9a54087c74a36abb771de41a0"><code>88a0d3e</code></a>
Update dependencies and fix stretch and update example</li>
<li>See full diff in <a
href="https://github.com/postcss/autoprefixer/compare/10.4.21...10.4.22">compare
view</a></li>
</ul>
</details>
<br />


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Author: dependabot[bot]

docs/package-lock.json

@@ -1,6 +1,6 @@
 {
   "devDependencies": {
-    "autoprefixer": "^10.4.21",
+    "autoprefixer": "^10.4.22",
     "postcss-cli": "^11.0.1"
   }
 }