Update dependency pytest-django to v4

This MR contains the following updates:

Package	Type	Update	Change
pytest-django (changelog)	dev-dependencies	major	^3.9.0 -> ^4.0.0

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Release Notes

pytest-dev/pytest-django

v4.8.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-8-0-2024-01-30

v4.7.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-7-0-2023-11-08

v4.6.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-6-0-2023-10-30

v4.5.2

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-5-2-2021-12-07

v4.5.1

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-5-1-2021-12-02

v4.5.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-5-0-2021-12-01

v4.4.0

Compare Source

v4.3.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-3-0-2021-05-15

v4.2.0

Compare Source

v4.1.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-1-0-2020-10-22

v4.0.0

Compare Source

https://pytest-django.readthedocs.io/en/latest/changelog.html#v4-0-0-2020-10-16

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