Update pytest-django requirement from <3.10,>=3.8 to >=3.8,<3.11

[dependabot-preview]

Updates the requirements on pytest-django to permit the latest version.

Changelog

Sourced from pytest-django's changelog.

v3.10.0 (2020-08-25)

Improvements

• Officialy support Django 3.1
• Preliminary supoprt for upcoming Django 3.2
• Support for pytest-xdist 2.0

Misc

• Fix running pytest-django's own tests against pytest 6.0 (#855)

v3.9.0 (2020-03-31)

Improvements

• Improve test ordering with Django test classes (#830)
• Remove import of pkg_resources for parsing pytest version (performance) (#826)

Bugfixes

• Work around unittest issue with pytest 5.4.{0,1} (#825)
• Don't break --failed-first when re-ordering tests (#819, #820)
• pytest_addoption: use group.addoption (#833)

Misc

• Remove Django version from --nomigrations heading (#822)
• docs: changelog: prefix headers with v for permalink anchors
• changelog: add custom/fixed anchor for last version
• setup.py: add Changelog to project_urls

v3.8.0 (2020-01-14)

Improvements

• Make Django's assertion helpers available in pytest_django.asserts (#709).
• Report django-configurations setting (#791)

v3.7.0 (2019-11-09)

Commits

• 7474f9b Release 3.10.0
• db5166f Merge pull request #861 from pytest-dev/graingert-patch-1
• 210ee60 Merge pull request #857 from untitaker/fix-django-32
• 107155e support pytest-xdist 2
• 85ee345 fix lints
• ed04bb0 Fix support for Django 3.2
• e613a88 Merge pull request #855 from michael-k/django-3.1
• 5ed3ea2 Run tests against Django 3.1
• 3f03d0a Fix compat with pytest 6
• 400143b Fix invalid format string
• Additional commits viewable in compare view

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