Bump codecov/codecov-action from 4 to 5 #760

Job	Run time
Check for news fragments in 'changelog.d/'	6s
Lint (black)	19s
Lint (ruff)	18s
Test Python 3.10, Django 4.2, Redis.py latest	4m 57s
Lint (mypy)	32s
Test Python 3.10, Django 5.0, Redis.py latest	5m 0s
Test Python 3.10, Django 5.1, Redis.py latest	4m 58s
Test Python 3.11, Django 4.2, Redis.py latest	4m 56s
Test Python 3.11, Django 5.0, Redis.py latest	5m 0s
Test Python 3.11, Django 5.1, Redis.py latest	4m 56s
Test Python 3.12, Django 4.2, Redis.py latest	5m 1s
Test Python 3.12, Django 5.0, Redis.py latest	5m 4s
Test Python 3.12, Django 5.1, Redis.py latest	4m 59s
Test Python 3.8, Django 4.2, Redis.py latest	4m 59s
Test Python 3.9, Django 4.2, Redis.py latest	4m 56s
Test Python 3.12, Django 5.1, Redis.py master	5m 4s
Test Python 3.12, Django main, Redis.py latest	5m 16s
Test Python 3.12, Django main, Redis.py master	5m 10s
	1h 11m 31s

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