Add relay_lock to cache-handling, formatting #1955

Job	Run time
Prepare	46s
Dependency	3s
Shellcheck	4s
Ruff check and force	7s
Check commit	47s
Create pytest cache for Python 3.13	7s
Run pytest using Python 3.13	19s
Process test coverage	0s
Run mypy	0s
Build and publish Python 🐍 distributions 📦 to TestPyPI	0s
Process test complexity	0s
	2m 13s

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