Merge pull request #33 from sensorsdata/dependabot/npm_and_yarn/demo/nextjs/next-9.3.3

Bump next from 8.1.0 to 9.3.3 in /demo/nextjs

Author: riyue

demo/nextjs/package.json

@@ -14,7 +14,7 @@
   "license": "ISC",
   "dependencies": {
     "express": "^4.16.4",
-    "next": "^8.0.3",
+    "next": "^9.3.3",
     "react": "^16.8.4",
     "react-dom": "^16.8.4"
   }