Bump to v1.7.3a1 #5460

Job	Run time
Shellcheck	4s
Prepare	1m 2s
Dependency	7s
Ruff check and force	14s
Check commit	35s
Create pytest cache for Python 3.13.0	18s
Create pytest cache for Python 3.12	6s
Run pytest using Python 3.13.0	22s
Run pytest using Python 3.12	14s
Run mypy	18s
Process test coverage	24s
Build and publish Python 🐍 distributions 📦 to TestPyPI	31s
Process test complexity	13s
	4m 28s

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