bump upload/download artifact workflow action versions. #898

Job	Run time
Build macOS/x86 wheels (3.8)	6m 8s
Build macOS/x86 wheels (3.9)	9m 50s
Build macOS/x86 wheels (3.10)	10m 41s
Build macOS/x86 wheels (3.11)	5m 59s
Build macOS/x86 wheels (3.12)	8m 5s
Build source distribution	21s
Build and test Linux wheels (python3.8)	8m 22s
Build and test Linux wheels (python3.9)	8m 10s
Build and test Linux wheels (python3.10)	8m 24s
Build and test Linux wheels (python3.11)	8m 22s
Build and test Linux wheels (python3.12)	8m 40s
Build package from source dist (3.8)	3m 42s
Build package from source dist (3.9)	3m 36s
Build package from source dist (3.10)	3m 37s
Build package from source dist (3.11)	3m 35s
Build package from source dist (3.12)	4m 3s
Test macOS/x86 wheels (3.8)	33s
Test macOS/x86 wheels (3.9)	1m 11s
Test macOS/x86 wheels (3.10)	55s
Test macOS/x86 wheels (3.11)	35s
Test macOS/x86 wheels (3.12)	1m 49s
Upload to PyPI	0s
	1h 46m 38s

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