Enabled parallel tests #744

Job	Run time
Check for news fragments in 'changelog.d/'	12s
Lint (black)	28s
Test Python 3.10, Django 4.2, Redis.py latest	1m 45s
Lint (ruff)	27s
Test Python 3.10, Django 5.0, Redis.py latest	1m 47s
Lint (mypy)	24s
Test Python 3.10, Django 5.1, Redis.py latest	1m 49s
Test Python 3.11, Django 4.2, Redis.py latest	1m 55s
Test Python 3.11, Django 5.0, Redis.py latest	2m 2s
Test Python 3.11, Django 5.1, Redis.py latest	1m 52s
Test Python 3.12, Django 4.2, Redis.py latest	1m 56s
Test Python 3.12, Django 5.0, Redis.py latest	1m 56s
Test Python 3.12, Django 5.1, Redis.py latest	2m 4s
Test Python 3.8, Django 4.2, Redis.py latest	1m 58s
Test Python 3.9, Django 4.2, Redis.py latest	1m 45s
Test Python 3.12, Django 5.1, Redis.py master	2m 11s
Test Python 3.12, Django main, Redis.py latest	2m 5s
Test Python 3.12, Django main, Redis.py master	1m 54s
	28m 30s

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