Update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -23,6 +23,6 @@
   },
   "devDependencies": {
     "@next-theme/eslint-config": "0.0.3",
-    "eslint": "8.27.0"
+    "eslint": "9.30.1"
   }
 }