chore(deps-dev): bump postcss from 8.4.21 to 8.4.22

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 to 8.4.22.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.21...8.4.22)

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

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

package.json

@@ -22,7 +22,7 @@
     "eslint": "^8.38.0",
     "eslint-config-prettier": "^8.8.0",
     "eslint-plugin-prettier": "^4.2.1",
-    "postcss": "^8.4.5",
+    "postcss": "^8.4.22",
     "prettier": "^2.8.7",
     "prettier-plugin-tailwindcss": "^0.2.7",
     "sanitize-html": "^2.10.0"