build(deps): bump actions/download-artifact from 3 to 4 #605

Job	Run time
Check DockerHub secrets exist	1s
test (debos-arch)	1m 8s
test (debos-bookworm)	52s
test (debos-bullseye)	44s
test (debos-trixie)	53s
Build Docker container	3m 13s
Run unit tests	2m 6s
recipes on nofakemachine	32s
escaping on nofakemachine	48s
debian (amd64) on nofakemachine	1m 19s
debian (arm64) on nofakemachine	2m 4s
debian (armhf) on nofakemachine	2m 2s
recipes on qemu	55s
escaping on qemu	44s
debian (amd64) on qemu	5m 6s
debian (arm64) on qemu	33m 34s
debian (armhf) on qemu	36m 38s
recipes on uml	39s
escaping on uml	39s
debian (amd64) on uml	5m 7s
debian (arm64) on uml	10m 37s
debian (armhf) on uml	17m 41s
arch on arch	8m 50s
partitioning on qemu	59s
apertis on uml	7m 4s
partitioning on uml	44s
Publish to GHCR	2m 39s
allgreen	2s
Publish to DockerHub	2m 29s
	2h 30m 9s

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