Update pytest-django to 3.8.0

[pyup-bot]

This PR updates pytest-django from 3.5.1 to 3.8.0.

Changelog

3.8.0

------------------

Improvements
^^^^^^^^^^^^

* Make Django's assertion helpers available in pytest_django.asserts (709).

* Report django-configurations setting (791)

3.7.0

------------------

Bugfixes
^^^^^^^^

* Monkeypatch pytest to not use ``TestCase.debug`` with unittests, instead
of patching it into Django (782).

* Work around pytest crashing due to ``pytest.fail`` being used from within the
DB blocker, and pytest trying to display an object representation involving
DB access (781).  pytest-django uses a ``RuntimeError`` now instead.

3.6.0

------------------

Features
^^^^^^^^

* Rename test databases when running parallel Tox (678, 680)

Bugfixes
^^^^^^^^

* Django unittests: restore "debug" function (769, 771)

Misc
^^^^

* Improve/harden internal tests / infrastructure.

Links

• PyPI: https://pypi.org/project/pytest-django
• Changelog: https://pyup.io/changelogs/pytest-django/
• Docs: https://pytest-django.readthedocs.io/

[pyup-bot]

Closing this in favor of #626