Update pytest-django to 3.7.0

[pyup-bot]

This PR updates pytest-django from 3.6.0 to 3.7.0.

Changelog

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.

Links

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

[codecov]

Codecov Report

Merging #730 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #730   +/-   ##
=======================================
  Coverage   97.08%   97.08%           
=======================================
  Files          54       54           
  Lines        2742     2742           
=======================================
  Hits         2662     2662           
  Misses         80       80

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