Improve refactoring of _update_rollover() #1281

Job	Run time
Dependency	5s
Shellcheck	4s
Prepare	53s
Ruff check and force	7s
Check commit	38s
Create pytest cache for Python 3.11	7s
Create pytest cache for Python 3.12	7s
Run pytest using Python 3.12	26s
Run pytest using Python 3.11	22s
Process test coverage	11s
Run mypy	11s
Process test complexity	10s
Build and publish Python 🐍 distributions 📦 to TestPyPI	20s
	3m 41s

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