Update postcss 8.5.4 → 8.5.6 (patch) (#18395)

Here is everything you need to know about this upgrade. Please take a
good look at what changed and the test results before merging this pull
request.

### What changed?




#### ✳️ postcss (8.5.4 → 8.5.6) ·
[Repo](https://github.com/postcss/postcss) ·
[Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)



<details>
<summary>Release Notes</summary>
<h4><a
href="https://github.com/postcss/postcss/releases/tag/8.5.6">8.5.6</a></h4>

<blockquote><ul dir="auto">
<li>Fixed <code class="notranslate">ContainerWithChildren</code> type
discriminating (by <a
href="https://bounce.depfu.com/github.com/Goodwine">@Goodwine</a>).</li>
</ul></blockquote>
<h4><a
href="https://github.com/postcss/postcss/releases/tag/8.5.5">8.5.5</a></h4>

<blockquote><ul dir="auto">
<li>Fixed <code class="notranslate">package.json</code>→<code
class="notranslate">exports</code> compatibility with some tools (by <a
href="https://bounce.depfu.com/github.com/JounQin">@JounQin</a>).</li>
</ul></blockquote>
<p><em>Does any of this look wrong? <a
href="https://depfu.com/packages/npm/postcss/feedback">Please let us
know.</a></em></p>
</details>

<details>
<summary>Commits</summary>
<p><a
href="https://github.com/postcss/postcss/compare/6cb4a6673fb6d8b23eb1ebe66a22b6267ab141de...91d6eb5c3d1ca8acb4e8e3926005acf2b066c211">See
the full diff on Github</a>. The new version differs by 7 commits:</p>
<ul>
<li><a
href="https://github.com/postcss/postcss/commit/91d6eb5c3d1ca8acb4e8e3926005acf2b066c211"><code>Release
8.5.6 version</code></a></li>
<li><a
href="https://github.com/postcss/postcss/commit/65ffc55117bf4289b1f977986ed76fad402641b1"><code>Update
dependencies</code></a></li>
<li><a
href="https://github.com/postcss/postcss/commit/ecd20eb7f9587d63e3f3348b768aec0e9fb000d3"><code>Fix
ContainerWithChildren to allow discriminating the node type by comparing
its type property (#2049)</code></a></li>
<li><a
href="https://github.com/postcss/postcss/commit/c18159719e4a6d65ad7085edf1dc42e07814f683"><code>Release
8.5.5 version</code></a></li>
<li><a
href="https://github.com/postcss/postcss/commit/c5523fbec5f32622e77103c643e1258007c2609d"><code>Update
dependencies</code></a></li>
<li><a
href="https://github.com/postcss/postcss/commit/2e3450c55f41e378e086f4f189e5243a573c3390"><code>refactor:
`import` should be listed before `require` (#2052)</code></a></li>
<li><a
href="https://github.com/postcss/postcss/commit/4d720bd01adec2e8645bf91e725825bebb712e1b"><code>Update
EM text</code></a></li>
</ul>
</details>












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Co-authored-by: depfu[bot] <23717796+depfu[bot]@users.noreply.github.com>

Author: depfu[bot]

package.json

@@ -50,7 +50,7 @@
   "devDependencies": {
     "@playwright/test": "^1.53.0",
     "@types/node": "catalog:",
-    "postcss": "8.5.4",
+    "postcss": "8.5.6",
     "postcss-import": "^16.1.1",
     "prettier": "catalog:",
     "prettier-plugin-embed": "^0.5.0",