Bump postcss from 8.4.25 to 8.4.31 in /docs/app (#1537)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.25 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>
</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>
</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/8.4.25...8.4.31">compare
view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=postcss&package-manager=npm_and_yarn&previous-version=8.4.25&new-version=8.4.31)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

You can trigger a rebase of this PR by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after
your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge
and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating
it. You can achieve the same result by closing it manually
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)
You can disable automated security fix PRs for this repo from the
[Security Alerts
page](https://github.com/jetpack-io/devbox/network/alerts).

</details>

> **Note**
> Automatic rebases have been disabled on this pull request as it has
been open for over 30 days.

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/app/yarn.lock

@@ -9447,13 +9447,13 @@ __metadata:
   linkType: hard
 
 "postcss@npm:^8.3.11, postcss@npm:^8.4.14, postcss@npm:^8.4.17, postcss@npm:^8.4.21":
-  version: 8.4.25
-  resolution: "postcss@npm:8.4.25"
+  version: 8.4.31
+  resolution: "postcss@npm:8.4.31"
   dependencies:
     nanoid: ^3.3.6
     picocolors: ^1.0.0
     source-map-js: ^1.0.2
-  checksum: 9ed3ab8af43ad5210c28f56f916fd9b8c9f94fbeaebbf645dcf579bc28bdd8056c2a7ecc934668d399b81fedb6128f0c4b299f931e50454964bc911c25a3a0a2
+  checksum: 1d8611341b073143ad90486fcdfeab49edd243377b1f51834dc4f6d028e82ce5190e4f11bb2633276864503654fb7cab28e67abdc0fbf9d1f88cad4a0ff0beea
   languageName: node
   linkType: hard