Bump actions/download-artifact from 7.0.0 to 8.0.0 in the github-actions group #310

Job	Run time
Build ubuntu-24.04-arm (aarch64) wheels	1m 47s
Build macos-15 (arm64) wheels	56s
Build source distribution	33s
Build windows-2022 (AMD64) wheels	2m 38s
Build macos-15-intel (x86_64) wheels	1m 35s
Build ubuntu-22.04 (x86_64) wheels	1m 28s
Show artifacts	5s
Publish to PyPI	0s
	9m 2s

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