pkg(demo): Fix package lock

Author: ntucker

examples/nextjs/package-lock.json

@@ -10,6 +10,7 @@
   },
   "dependencies": {
     "@anansi/babel-preset": "^6.0.0",
+    "@babel/core": "^7.24.7",
     "@data-client/react": "^0.13.0",
     "@data-client/rest": "^0.12.8",
     "@types/node": "20.14.5",