fix: upgrade Next.js and Node LTS container

package.json

@@ -6,13 +6,13 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "next lint",
+    "lint": "eslint .",
     "format": "prettier --write .",
     "format:check": "prettier --check ."
   },
   "dependencies": {
     "lucide-react": "^1.8.0",
-    "next": "16.2.4",
+    "next": "16.4.2",
     "react": "19.2.5",
     "react-confetti": "^6.4.0",
     "react-dom": "19.2.5"
@@ -23,7 +23,7 @@
     "@types/react": "19.2.14",
     "@types/react-dom": "19.2.3",
     "eslint": "^9",
-    "eslint-config-next": "16.2.4",
+    "eslint-config-next": "16.4.2",
     "postcss": "^8",
     "prettier": "^3.8.1",
     "tailwindcss": "^4",