chore(deps): update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
     "@types/react": "^18",
     "@types/react-dom": "^18",
     "@types/rss": "^0.0.32",
-    "eslint": "^8",
+    "eslint": "^9.0.0",
     "eslint-config-next": "14.2.4",
     "eslint-plugin-import": "^2.29.1",
     "handlebars": "^4.7.8",