Build(deps-dev): bump postcss from 8.5.4 to 8.5.6

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.4 to 8.5.6.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.4...8.5.6)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -11,7 +11,7 @@
         "axios": "^1.8.2",
         "daisyui": "^5.0.43",
         "laravel-vite-plugin": "^1.3.0",
-        "postcss": "^8.5.4",
+        "postcss": "^8.5.6",
         "sass": "^1.89.2",
         "tailwindcss": "^4.1.8",
         "vite": "^6.3.5"