✅ Fix zgw_consumers import error in tests

tests/conftest.py

@@ -4,7 +4,7 @@
 import pytest
 from rest_framework.test import APIClient
 from zgw_consumers.constants import APITypes
-from zgw_consumers.service import Service
+from zgw_consumers.models import Service
 
 from notifications_api_common.models import NotificationsConfig
 from testapp import urls  # noqa