chore(deps): update dependency postcss to v8.5.5

Author: renovate[bot]

package.json

@@ -37,7 +37,7 @@
     "eslint-plugin-import-x": "4.6.1",
     "eslint-plugin-react": "7.37.4",
     "eslint-plugin-react-hooks": "5.2.0",
-    "postcss": "8.5.3",
+    "postcss": "8.5.5",
     "postcss-preset-mantine": "1.17.0",
     "postcss-simple-vars": "7.0.1",
     "prettier": "3.5.3",