chore: fix builds

Author: ascorbic

demos/plugin-wrapper/package.json

@@ -8,6 +8,7 @@
   },
   "devDependencies": {
     "@netlify/plugin-nextjs": "*",
+    "@netlify/next": "*",
     "@types/fs-extra": "^9.0.13",
     "@types/jest": "^27.4.1",
     "@types/node": "^17.0.25",