chore(deps): update dependency eslint-config-next to v16

Author: renovate[bot]

package.json

@@ -33,7 +33,7 @@
     "@types/react": "19.1.8",
     "@types/react-dom": "19.1.6",
     "eslint": "9.31.0",
-    "eslint-config-next": "15.4.3",
+    "eslint-config-next": "16.2.1",
     "eslint-config-prettier": "10.1.8",
     "postcss": "8.5.6",
     "prettier": "3.6.2",