Add django 4 to tox matrix

[shosca]

No description provided.

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.07%.

Quality metrics	Before	After	Change
Complexity	0.75 ⭐	0.83 ⭐	0.08 👎
Method Length	29.62 ⭐	30.05 ⭐	0.43 👎
Working memory	5.57 ⭐	5.55 ⭐	-0.02 👍
Quality	87.66% ⭐	87.59% ⭐	-0.07% 👎

Other metrics	Before	After	Change
Lines	269	281	12

Changed files	Quality Before	Quality After	Quality Change
rest_witchcraft/filters.py	81.58% ⭐	81.58% ⭐	0.00%
tests/test_routers.py	89.42% ⭐	89.18% ⭐	-0.24% 👎
tests/urls/testhyperlinkedidentityfield.py	99.33% ⭐	97.50% ⭐	-1.83% 👎
tests/urls/testhyperlinkedidentityfieldcomposite.py	99.33% ⭐	97.50% ⭐	-1.83% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
rest_witchcraft/filters.py	SearchFilter.get_schema_fields	0 ⭐	41 ⭐	10 😞	77.94% ⭐	Extract out complex expressions

Legend and Explanation

The emojis denote the absolute quality of the code:

• ⭐ excellent
• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

Help us improve this quality report!

[coveralls]

Coverage remained the same at 100.0% when pulling dce32f1 on django4 into 42278a9 on master.