fix: unit test

Author: ChengShi-1

test/unit/guestbooks/GetGuestbook.test.ts

@@ -12,9 +12,6 @@ describe('execute', () => {
     nameRequired: true,
     institutionRequired: false,
     positionRequired: false,
-    email: 'test@gmail.com',
-    institution: 'Harvard University',
-    position: 'Researcher',
     customQuestions: [],
     createTime: '2024-01-01T00:00:00Z',
     dataverseId: 34