Bump to a4 #6060

Job	Run time
Dependency	3s
Cache identify	6s
Shellcheck	6s
Prepare	1m 8s
Ruff check and force	10s
Check commit	18s
Run pytest using Python 3.14	20s
Run pytest using Python 3.13	1m 9s
Run mypy	16s
Process test coverage	18s
Build and publish Python 🐍 distributions 📦 to TestPyPI	15s
Process test complexity	11s
	4m 20s

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