fix: update group sync test to match error message format

tests/unit/services/group-sync.test.ts

@@ -150,7 +150,7 @@ describe('GroupSyncService', () => {
         json: async () => ({ error: 'Not Found' })
       }));
       
-      await expect(GroupSyncService.syncGroups()).rejects.toThrow('API request failed: Not Found');
+      await expect(GroupSyncService.syncGroups()).rejects.toThrow('API request failed: 404 Not Found');
       expect(consoleErrorMock).toHaveBeenCalled();
       
       console.error = originalConsoleError;