Django 3.2 setUpTestData uses copy.deepcopy() #246
Description
Using setUpTestData() with django-stdimage in Django 3.2 does not work anymore, as it look like copy.deepcopy() is not supported with django-stdimage.
Changed in Django 3.2:
Objects assigned to class attributes in setUpTestData() must support creating deep copies with copy.deepcopy() in order to > isolate them from alterations performed by each test methods. In previous versions of Django these objects were reused > and changes made to them were persisted between test methods.