fix(deps): update dependency postcss to v8.4.31 [security]

Author: renovate[bot]

package.json

@@ -126,7 +126,7 @@
     "lefthook": "^1.5.6",
     "log4brains": "^1.0.1",
     "nx": "17.2.8",
-    "postcss": "8.4.21",
+    "postcss": "8.4.31",
     "prettier": "^3.0.0",
     "react": "18.2.0",
     "react-dom": "18.2.0",