Bump postcss from 8.4.49 to 8.5.0 (#776)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.49 to 8.5.0.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.49...8.5.0)

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

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

package.json

@@ -37,7 +37,7 @@
     "@typescript-eslint/parser": "8.19.1",
     "eslint": "9.8.0",
     "eslint-config-next": "15.1.4",
-    "postcss": "8.4.49",
+    "postcss": "8.5.0",
     "prettier": "3.4.2",
     "prettier-plugin-tailwindcss": "0.6.9",
     "tailwindcss": "3.4.17",