Bump pytest-django from 3.4.2 to 3.4.3
Bump pytest-django from 3.4.2 to 3.4.3

Bumps [pytest-django](https://github.com/pytest-dev/pytest-django) from 3.4.2 to 3.4.3.
- [Release notes](https://github.com/pytest-dev/pytest-django/releases)
- [Changelog](https://github.com/pytest-dev/pytest-django/blob/master/docs/changelog.rst)
- [Commits](https://github.com/pytest-dev/pytest-django/compare/3.4.2...3.4.3)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
sloria/django-rest-marshmallow,tomchristie/django-rest-marshmallow