Merge pull request #593 from squarestack/renovate/postcss-8.x

chore(deps): update dependency postcss to v8.5.4

Author: IgorKowalczyk

package.json

@@ -49,7 +49,7 @@
     "@types/node": "22.15.23",
     "@types/react": "19.1.6",
     "eslint": "9.27.0",
-    "postcss": "8.5.3",
+    "postcss": "8.5.4",
     "prettier": "3.5.3",
     "prettier-plugin-tailwindcss": "0.6.11",
     "tailwindcss": "4.1.7",