Tests

Bump actions/download-artifact from 3 to 4 #277

Job	Run time
Build and test on aarch64 (cp310-cp310)	9m 2s
Build and test on ubuntu-latest	45s
Build and test on aarch64 (cp312-cp312)	8m 52s
Build and test on ubuntu-latest	47s
Build and test on ubuntu-latest	47s
Build and test on ubuntu-latest	53s
Build and test on windows-latest	2m 32s
Build and test on windows-latest	2m 10s
Build and test on windows-latest	2m 25s
Build and test on windows-latest	2m 15s
Build and test on macos-latest	43s
Build and test on macos-latest	36s
Build and test on macos-latest	35s
Build and test on macos-latest	34s
	32m 56s

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