Upgrade tests

Author: karlhorky

__tests__/package.json

@@ -21,7 +21,7 @@
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "eslint": "^9.10.0",
-    "eslint-config-upleveled": "^8.12.1",
+    "eslint-config-upleveled": "^9.0.0",
     "postcss-styled-syntax": "^0.7.0",
     "prettier": "^3.2.5",
     "stylelint": "^16.0.0",