Enabled parallel tests #743

Job	Run time
Check for news fragments in 'changelog.d/'	10s
Lint (black)	26s
Test Python 3.10, Django 4.2, Redis.py latest	1m 57s
Lint (ruff)	20s
Lint (mypy)	26s
Test Python 3.10, Django 5.0, Redis.py latest	1m 56s
Test Python 3.10, Django 5.1, Redis.py latest	1m 55s
Test Python 3.11, Django 4.2, Redis.py latest	1m 46s
Test Python 3.11, Django 5.0, Redis.py latest	2m 3s
Test Python 3.11, Django 5.1, Redis.py latest	1m 52s
Test Python 3.12, Django 4.2, Redis.py latest	2m 0s
Test Python 3.12, Django 5.0, Redis.py latest	2m 48s
Test Python 3.12, Django 5.1, Redis.py latest	1m 58s
Test Python 3.8, Django 4.2, Redis.py latest	1m 52s
Test Python 3.9, Django 4.2, Redis.py latest	1m 49s
Test Python 3.12, Django 5.1, Redis.py master	2m 4s
Test Python 3.12, Django main, Redis.py latest	2m 11s
Test Python 3.12, Django main, Redis.py master	1m 56s
	29m 29s

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