fix(deps): update dependency next-auth to v5.0.0-beta.29

Author: renovate[bot]

packages/next-auth-sample/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "next": "^15.3.3",
-    "next-auth": "5.0.0-beta.27",
+    "next-auth": "5.0.0-beta.29",
     "react": "^19.0.0",
     "react-dom": "^19.0.0"
   },