Update dependency eslint-config-next to v16

Author: renovate[bot]

package.json

@@ -74,7 +74,7 @@
     "dotenv": "^17.2.3",
     "env-cmd": "^11.0.0",
     "eslint": "^9.39.1",
-    "eslint-config-next": "15.5.7",
+    "eslint-config-next": "16.2.1",
     "eslint-plugin-check-file": "^3.3.1",
     "eslint-plugin-perfectionist": "^4.15.1",
     "postcss": "^8.5.6",