Bump postcss from 8.4.21 to 8.4.31 in /website (#1165)

Summary:
Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 to 8.4.31.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/postcss/postcss/releases">postcss's releases</a>.</em></p>
<blockquote>
<h2>8.4.31</h2>
<ul>
<li>Fixed <code>\r</code> parsing to fix CVE-2023-44270.</li>
</ul>
<h2>8.4.30</h2>
<ul>
<li>Improved source map performance (by <a href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
</ul>
<h2>8.4.29</h2>
<ul>
<li>Fixed <code>Node#source.offset</code> (by <a href="https://github.com/idoros"><code>@​idoros</code></a>).</li>
<li>Fixed docs (by <a href="https://github.com/coliff"><code>@​coliff</code></a>).</li>
</ul>
<h2>8.4.28</h2>
<ul>
<li>Fixed <code>Root.source.end</code> for better source map (by <a href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
<li>Fixed <code>Result.root</code> types when <code>process()</code> has no parser.</li>
</ul>
<h2>8.4.27</h2>
<ul>
<li>Fixed <code>Container</code> clone methods types.</li>
</ul>
<h2>8.4.26</h2>
<ul>
<li>Fixed clone methods types.</li>
</ul>
<h2>8.4.25</h2>
<ul>
<li>Improve stringify performance (by <a href="https://github.com/romainmenke"><code>@​romainmenke</code></a>).</li>
<li>Fixed docs (by <a href="https://github.com/vikaskaliramna07"><code>@​vikaskaliramna07</code></a>).</li>
</ul>
<h2>8.4.24</h2>
<ul>
<li>Fixed <code>Plugin</code> types.</li>
</ul>
<h2>8.4.23</h2>
<ul>
<li>Fixed warnings in TypeDoc.</li>
</ul>
<h2>8.4.22</h2>
<ul>
<li>Fixed TypeScript support with <code>node16</code> (by <a href="https://github.com/remcohaszing"><code>@​remcohaszing</code></a>).</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/postcss/postcss/blob/main/CHANGELOG.md">postcss's changelog</a>.</em></p>
<blockquote>
<h2>8.4.31</h2>
<ul>
<li>Fixed <code>\r</code> parsing to fix CVE-2023-44270.</li>
</ul>
<h2>8.4.30</h2>
<ul>
<li>Improved source map performance (by Romain Menke).</li>
</ul>
<h2>8.4.29</h2>
<ul>
<li>Fixed <code>Node#source.offset</code> (by Ido Rosenthal).</li>
<li>Fixed docs (by Christian Oliff).</li>
</ul>
<h2>8.4.28</h2>
<ul>
<li>Fixed <code>Root.source.end</code> for better source map (by Romain Menke).</li>
<li>Fixed <code>Result.root</code> types when <code>process()</code> has no parser.</li>
</ul>
<h2>8.4.27</h2>
<ul>
<li>Fixed <code>Container</code> clone methods types.</li>
</ul>
<h2>8.4.26</h2>
<ul>
<li>Fixed clone methods types.</li>
</ul>
<h2>8.4.25</h2>
<ul>
<li>Improve stringify performance (by Romain Menke).</li>
<li>Fixed docs (by <a href="https://github.com/vikaskaliramna07"><code>@​vikaskaliramna07</code></a>).</li>
</ul>
<h2>8.4.24</h2>
<ul>
<li>Fixed <code>Plugin</code> types.</li>
</ul>
<h2>8.4.23</h2>
<ul>
<li>Fixed warnings in TypeDoc.</li>
</ul>
<h2>8.4.22</h2>
<ul>
<li>Fixed TypeScript support with <code>node16</code> (by Remco Haszing).</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/postcss/postcss/commit/90208de8805dd762596c0028b8637ffbed23e371"><code>90208de</code></a> Release 8.4.31 version</li>
<li><a href="https://github.com/postcss/postcss/commit/58cc860b4c1707510c9cd1bc1fa30b423a9ad6c5"><code>58cc860</code></a> Fix carrier return parsing</li>
<li><a href="https://github.com/postcss/postcss/commit/4fff8e4cdc237619df1d73a444c0a8329701c1e2"><code>4fff8e4</code></a> Improve pnpm test output</li>
<li><a href="https://github.com/postcss/postcss/commit/cd43ed123274a92ebc13a1e8cccf1d65b8198f84"><code>cd43ed1</code></a> Update dependencies</li>
<li><a href="https://github.com/postcss/postcss/commit/caa916bdcbf66c51321574e2dde112ab13e8b306"><code>caa916b</code></a> Update dependencies</li>
<li><a href="https://github.com/postcss/postcss/commit/8972f76923e921a3c9655822382039b31b1c8e1a"><code>8972f76</code></a> Typo</li>
<li><a href="https://github.com/postcss/postcss/commit/11a5286f781d2a637f2c545c5e9cd661055acaab"><code>11a5286</code></a> Typo</li>
<li><a href="https://github.com/postcss/postcss/commit/45c55017776fc61f7815d1ea8e92d5291ca5d6c8"><code>45c5501</code></a> Release 8.4.30 version</li>
<li><a href="https://github.com/postcss/postcss/commit/bc3c341f589f9c15f1b56838a33d908374e537e0"><code>bc3c341</code></a> Update linter</li>
<li><a href="https://github.com/postcss/postcss/commit/b2be58a2eb788d12474ee1335f8ecdb9fa6225aa"><code>b2be58a</code></a> Merge pull request <a href="https://redirect.github.com/postcss/postcss/issues/1881">#1881</a> from romainmenke/improve-sourcemap-performance--phil...</li>
<li>Additional commits viewable in <a href="https://github.com/postcss/postcss/compare/8.4.21...8.4.31">compare view</a></li>
</ul>
</details>
<br />

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</details>

Pull Request resolved: #1165

Reviewed By: xavierd

Differential Revision: D50095259

Pulled By: genevievehelsel

fbshipit-source-id: 262f8e2a86deadc0c7d6cf0b7bdeb21f71750d75

website/yarn.lock

@@ -6536,10 +6536,10 @@ multicast-dns@^7.2.5:
     dns-packet "^5.2.2"
     thunky "^1.0.2"
 
-nanoid@^3.3.4:
-  version "3.3.4"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.4.tgz#730b67e3cd09e2deacf03c027c81c9d9dbc5e8ab"
-  integrity sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw==
+nanoid@^3.3.6:
+  version "3.3.6"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.6.tgz#443380c856d6e9f9824267d960b4236ad583ea4c"
+  integrity sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==
 
 [email protected]:
   version "0.6.3"
@@ -7253,11 +7253,11 @@ postcss-zindex@^5.1.0:
   integrity sha512-fgFMf0OtVSBR1va1JNHYgMxYk73yhn/qb4uQDq1DLGYolz8gHCyr/sesEuGUaYs58E3ZJRcpoGuPVoB7Meiq9A==
 
 postcss@^8.3.11, postcss@^8.4.14, postcss@^8.4.17, postcss@^8.4.19:
-  version "8.4.21"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.21.tgz#c639b719a57efc3187b13a1d765675485f4134f4"
-  integrity sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
   dependencies:
-    nanoid "^3.3.4"
+    nanoid "^3.3.6"
     picocolors "^1.0.0"
     source-map-js "^1.0.2"