Bump to v1.5.1a0 test-version #5005

Job	Run time
Dependency	3s
Prepare	51s
Shellcheck	4s
Ruff check and force	4s
Check commit	37s
Create pytest cache for Python 3.12	9s
Run pytest using Python 3.12	13s
Run mypy	12s
Process test coverage	23s
Process test complexity	5s
Build and publish Python 🐍 distributions 📦 to TestPyPI	0s
	2m 41s

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