Update dependency eslint-config-next to v15

Author: renovate[bot]

example/package.json

@@ -16,6 +16,6 @@
   },
   "devDependencies": {
     "eslint": "8.42.0",
-    "eslint-config-next": "11.1.0"
+    "eslint-config-next": "15.5.0"
   }
 }