build(deps): bump postcss from 8.4.24 to 8.5.6

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.24 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@8.4.24...8.5.6)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -26,7 +26,7 @@
     "husky": "^8.0.3",
     "next": "13.5.6",
     "pnpm": "^8.9.2",
-    "postcss": "8.4.24",
+    "postcss": "8.5.6",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "react-icons": "^4.10.1",