build(deps): bump postcss from 8.5.6 to 8.5.8

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.8.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.8)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pnpm-lock.yaml

@@ -36,7 +36,7 @@ catalogs:
 
   linters:
     eslint: 9.39.2
-    postcss: 8.5.6
+    postcss: 8.5.8
     prettier: 3.7.4
     stylelint: 16.26.1