Copy testdata from fixture #6137

Job	Run time
Shellcheck	4s
Cache identify	4s
Dependency	5s
Prepare	7s
Ruff check and force	8s
Check commit	24s
Run pytest using Python 3.14	21s
Run pytest using Python 3.13	20s
Run mypy	15s
Process test coverage	14s
Process test complexity	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	10s
	2m 19s

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