fix: Fixing test due to the change in django32.
fix: Fixing test due to the change in django32.

Objects assigned to class attributes in TestCase.setUpTestData() are now isolated for each test method.

https://docs.djangoproject.com/en/3.2/releases/3.2/#tests

BOM-2866

eduNEXT/edx-platform,eduNEXT/edx-platform,angelapper/edx-platform,arbrandes/edx-platform,angelapper/edx-platform,edx/edx-platform,angelapper/edx-platform,eduNEXT/edx-platform,arbrandes/edx-platform,arbrandes/edx-platform,edx/edx-platform,edx/edx-platform,edx/edx-platform,eduNEXT/edx-platform,arbrandes/edx-platform,angelapper/edx-platform