Bump pytest-django from 3.8.0 to 4.3.0

Bumps [pytest-django](https://github.com/pytest-dev/pytest-django) from 3.8.0 to 4.3.0.
- [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@v3.8.0...v4.3.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

requirements.txt

@@ -5,7 +5,7 @@ marshmallow>=3.0,<4.0
 
 # Test requirements
 pytest
-pytest-django==3.8.0
+pytest-django==4.3.0
 pytest-cov==2.12.1
 flake8==3.9.2