Bump actions/upload-artifact from 6.0.0 to 7.0.0 #670

Job	Run time
build_windows (3.11, 2.3)	7m 26s
build_linux (3.11, 2.3)	3m 40s
build_linux (3.12, 2.3)	3m 11s
build_linux (3.13, 2.3)	3m 20s
build_linux (3.10, 2.2)	3m 13s
build_windows (3.12, 2.3)	7m 18s
build_windows (3.13, 2.3)	8m 22s
build_windows (3.10, 2.2)	8m 5s
test_linux (3.13, numpy">=2", false, ubuntu-latest)	1m 31s
test_linux (3.10, numpy">=2", false, ubuntu-latest)	1m 25s
test_linux (3.11, numpy">=2", false, ubuntu-latest)	1m 42s
test_linux (3.12, numpy">=2", false, ubuntu-latest)	1m 43s
test_windows (3.11, numpy">=2", false, windows-latest)	3m 43s
test_windows (3.13, numpy">=2", false, windows-latest)	3m 6s
test_windows (3.12, numpy">=2", false, windows-latest)	3m 15s
test_windows (3.10, numpy">=2", false, windows-latest)	3m 30s
	1h 4m 30s

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