Bump to v1.7.3a0 test-version #5441

Job	Run time
Shellcheck	4s
Prepare	56s
Dependency	7s
Ruff check and force	22s
Check commit	43s
Create pytest cache for Python 3.13.0	15s
Create pytest cache for Python 3.12	5s
Run pytest using Python 3.13.0	22s
Run pytest using Python 3.12	17s
Run mypy	19s
Process test coverage	19s
Process test complexity	13s
Build and publish Python 🐍 distributions 📦 to TestPyPI	39s
	4m 41s

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