Removing hardcoding of ID in fixture

greg/tests/api/test_person.py

@@ -65,8 +65,8 @@ def role_data_guest(role_test_guest, sponsor_bar, unit_foo) -> Dict:
         "role": "Test Guest",
         "start_date": "2021-06-10",
         "end_date": "2021-08-10",
-        "registered_by": "1",
-        "unit": "1",
+        "registered_by": sponsor_bar.id,
+        "unit": unit_foo.id
     }