Bump actions/upload-artifact from 4 to 6 (#17) #155

Job	Run time
Build and push image (nvidia, ghcr.io/ublue-os/bluefin-dx-nvidia:stable-daily, -nvidia)	7m 15s
Build and push image (main, ghcr.io/ublue-os/bluefin-dx:stable-daily)	6m 42s
	13m 57s

Provide feedback