Bump to a6 #3253

Job	Run time
Dependency	6s
Cache identify	4s
Shellcheck	4s
Prepare	22s
Ruff check and force	7s
Check commit	1m 20s
Run pytest using Python 3.13	33s
Process test coverage	14s
Run mypy	-1s
Process test complexity	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	17s
	3m 13s

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