Update pytest-django to 3.3.0

[pyup-bot]

This PR updates pytest-django from 3.1.2 to 3.3.0.

Changelog

3.3.0

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

Features
^^^^^^^^

* Added new fixtures ``django_mail_dnsname`` and ``django_mail_patch_dns``,
used by ``mailoutbox`` to monkeypatch the ``DNS_NAME`` used in
:py:mod:`django.core.mail` to improve performance and
reproducibility.

Bug fixes
^^^^^^^^^

* Fixed test for classmethod with Django TestCases (597, 598).
* Fixed RemovedInPytest4Warning: MarkInfo objects are deprecated (596, 603)
* Fixed scope of overridden settings with live_server fixture: previously they
were visible to following tests (612).

3.2.1

-----

* Fixed automatic deployment to PyPI.

3.2.0

-----

Features
^^^^^^^^

* Added new fixture `django_assert_num_queries` for testing the number of
database queries (387).
* `--fail-on-template-vars` has been improved and should now return
full/absolute path (470).
* Support for setting the live server port (500).
* unittest: help with setUpClass not being a classmethod (544).

Bug fixes
^^^^^^^^^

* Fix --reuse-db and --create-db not working together (411).
* Numerous fixes in the documentation. These should not go unnoticed 🌟

Compatibility
^^^^^^^^^^^^^

* Support for Django 2.0 has been added.
* Support for Django before 1.8 has been dropped.

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 #336