feature: support uploading ISOs to CloudFlare (#228) #2033

Job	Run time
build-base (40, silverblue)	7m 21s
build-base (40, kinoite)	9m 44s
build-base (40, cosmic)	5m 53s
build-base (41, silverblue)	8m 55s
build-base (41, kinoite)	11m 7s
build-base (41, cosmic)	6m 17s
build-base (stable, silverblue)	10m 0s
build-base (stable, kinoite)	11m 56s
build-base (stable, cosmic)	7m 16s
build-nvidia (40, silverblue, open)	10m 30s
build-nvidia (40, kinoite, open)	11m 44s
build-nvidia (40, cosmic, open)	12m 11s
build-nvidia (41, silverblue, open)	9m 29s
build-nvidia (41, kinoite, open)	11m 53s
build-nvidia (41, cosmic, open)	10m 47s
build-nvidia (stable, silverblue, open)	10m 18s
build-nvidia (stable, kinoite, open)	10m 38s
build-nvidia (stable, cosmic, open)	9m 16s
check	3s
	2h 55m 18s

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