Try to use SerializeMixin in imports

unittests/test_rest_framework.py

@@ -9,6 +9,7 @@
 from unittest.mock import ANY, MagicMock, call, patch
 
 from django.contrib.auth.models import Permission
+from django.test.testcases import SerializeMixin
 from django.urls import reverse
 from drf_spectacular.drainage import GENERATOR_STATS
 from drf_spectacular.settings import spectacular_settings
@@ -1763,7 +1764,7 @@ def test_user_should_not_have_access_to_product_3_in_detail(self):
         self.assertEqual(response.status_code, 404)
 
 
-class ImportScanTest(BaseClass.BaseClassTest):
+class ImportScanTest(SerializeMixin, BaseClass.BaseClassTest):
     fixtures = ['dojo_testdata.json']
 
     def __init__(self, *args, **kwargs):
@@ -2017,7 +2018,7 @@ def test_create_authorized_product_name_engagement_name_auto_create_product_type
             reimporter_mock.assert_not_called()
 
 
-class ReimportScanTest(DojoAPITestCase):
+class ReimportScanTest(SerializeMixin, DojoAPITestCase):
     fixtures = ['dojo_testdata.json']
 
     def setUp(self):
@@ -2695,7 +2696,7 @@ def __init__(self, *args, **kwargs):
         BaseClass.RESTEndpointTest.__init__(self, *args, **kwargs)
 
 
-class ImportLanguagesTest(BaseClass.BaseClassTest):
+class ImportLanguagesTest(SerializeMixin, BaseClass.BaseClassTest):
     fixtures = ['dojo_testdata.json']
 
     def __init__(self, *args, **kwargs):