Bump pytest-django from 4.5.2 to 4.6.0

Bumps [pytest-django](https://github.com/pytest-dev/pytest-django) from 4.5.2 to 4.6.0.
- [Release notes](https://github.com/pytest-dev/pytest-django/releases)
- [Changelog](https://github.com/pytest-dev/pytest-django/blob/master/docs/changelog.rst)
- [Commits](pytest-dev/pytest-django@v4.5.2...v4.6.0)

---
updated-dependencies:
- dependency-name: pytest-django
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -2,7 +2,7 @@
 django-oscar>=2.0,<3.2
 django-webtest==1.9.10
 tox>=3.20<4
-pytest-django==4.5.2
+pytest-django==4.6.0
 pytest-cov>=2.10<3
 django-widget-tweaks==1.4.9
 sorl-thumbnail