Update to latest + refactoring.

dashboard/15-final/app/api/auth/[...nextauth]/route.ts

@@ -1,6 +1,4 @@
-import NextAuth from 'next-auth';
-import { authOptions } from '@/auth';
+import { handlers } from '@/auth';
 
-const handler = NextAuth(authOptions);
-
-export { handler as GET, handler as POST };
+const { GET, POST } = handlers;
+export { GET, POST };