hotfix: vercel 배포 버전 수정 및 빌드 오류 해결

Author: Ji-HoonE

package.json

@@ -3,8 +3,8 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
-    "dev": "next dev",
-    "build": "next build",
+    "dev": "next dev --webpack",
+    "build": "next build --webpack",
     "start": "next start -p 3000",
     "lint": "next lint",
     "test": "jest"
@@ -35,12 +35,12 @@
     "js-cookie": "^3.0.5",
     "lodash.debounce": "^4.0.8",
     "lucide-react": "^0.515.0",
-    "next": "15.3.3",
+    "next": "16.0.7",
     "next-auth": "^4.24.11",
     "next-themes": "^0.4.6",
-    "react": "^19.0.0",
+    "react": "^19.2.1",
     "react-activity-calendar": "^2.7.13",
-    "react-dom": "^19.0.0",
+    "react-dom": "^19.2.1",
     "react-hook-form": "^7.61.1",
     "react-markdown": "^10.1.0",
     "remark-gfm": "^4.0.1",