Update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -18,7 +18,7 @@
     "@types/react-dom": "^19.0.0",
     "@vanilla-extract/css": "^1.15.3",
     "@vanilla-extract/next-plugin": "^2.4.3",
-    "eslint": "^8.57.0",
+    "eslint": "^9.0.0",
     "eslint-config-next": "^15.0.0",
     "next": "^15.0.0",
     "react": "^19.0.0",