Update codecov/codecov-action action to v7 (#453) #3456

Job	Run time
Shellcheck	6s
Dependency	6s
Cache identify	6s
Prepare	7s
Ruff check and force	11s
Check commit	28s
Run pytest using Python 3.14	34s
Process test coverage	18s
Run mypy	0s
Build and publish Python 🐍 distributions 📦 to TestPyPI	8s
Process test complexity	10s
	2m 14s

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