chore(deps-dev): bump pytest-django from 4.5.2 to 4.7.0 in /requirements

Bumps [pytest-django](https://github.com/pytest-dev/pytest-django) from 4.5.2 to 4.7.0.
- [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...v4.7.0)

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

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

requirements/dev.txt

@@ -1,6 +1,6 @@
 -r base.txt
 
-pytest-django==4.5.2
+pytest-django==4.7.0
 prospector==1.10.3
 factory_boy==3.3.0
 Faker==19.12.0