Make automatic joining work #1403

Job	Run time
Dependency	10s
Shellcheck	7s
Prepare	1m 2s
Ruff check and force	5s
Check commit	40s
Create pytest cache for Python 3.13	32s
Run pytest using Python 3.13	6h 0m 15s
Process test coverage	0s
Build and publish Python 🐍 distributions 📦 to TestPyPI	0s
Run mypy	0s
Process test complexity	0s
	6h 2m 51s

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