test

Bump actions/download-artifact from 3 to 4 #2157

Job	Run time
CLI responsiveness with latest Python	2m 10s
Downstream builds with Python 3.8	39s
Downstream builds with Python 3.9	38s
Downstream builds with Python 3.10	40s
Downstream builds with Python 3.11	37s
Python 3.8 on Linux	2m 55s
Downstream builds with Python 3.12	38s
Python 3.9 on Linux	3m 1s
Python 3.10 on Linux	2m 57s
Python 3.11 on Linux	2m 57s
Python 3.12 on Linux	3m 12s
Python 3.8 on Windows	8m 7s
Python 3.9 on Windows	6m 3s
Python 3.10 on Windows	6m 18s
Python 3.11 on Windows	6m 44s
Python 3.12 on Windows	7m 6s
Python 3.8 on macOS	3m 46s
Python 3.9 on macOS	4m 13s
Python 3.10 on macOS	3m 36s
Python 3.11 on macOS	4m 18s
Python 3.12 on macOS	3m 36s
Report coverage	32s
check	4s
	1h 14m 47s

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