Update python-pytest-django to rev 12 via SR 791158
https://build.opensuse.org/request/show/791158
by user scarabeus_iv + dimstar_suse
- Update to 3.9.0:
* Improve test ordering with Django test classes (#830)
* Remove import of pkg_resources for parsing pytest version (performance) (#826)
* Work around unittest issue with pytest 5.4.{0,1} (#825)
* Don't break --failed-first when re-ordering tests (#819, #820)
* pytest_addoption: use group.addoption (#833)