Update nextjs monorepo to v16.2.1

Author: renovate[bot]

avarc-frontend/package-lock.json

@@ -11,7 +11,7 @@
     "audit": "npm audit --audit-level=high"
   },
   "dependencies": {
-    "next": "16.1.5",
+    "next": "16.2.1",
     "react": "19.2.3",
     "react-dom": "19.2.3"
   },
@@ -20,7 +20,7 @@
     "@types/react": "19.2.8",
     "@types/react-dom": "19.2.3",
     "eslint": "9.39.2",
-    "eslint-config-next": "16.1.3",
+    "eslint-config-next": "16.2.1",
     "typescript": "5.9.3"
   }
 }