build(deps): bump postcss from 8.5.8 to 8.5.12 in /docs in the npm_and_yarn group across 1 directory (#100)

Bumps the npm_and_yarn group with 1 update in the /docs directory: [postcss](https://github.com/postcss/postcss).


Updates `postcss` from 8.5.8 to 8.5.12
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.8...8.5.12)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.12
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]

docs/package-lock.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "@astrojs/starlight": "^0.38.2",
     "@catppuccin/starlight": "^2.0.1",
-    "astro": "^6.1.8",
+    "astro": "^6.1.9",
     "sharp": "^0.34.5",
     "starlight-image-zoom": "^0.14.1"
   }