chore: switch to new ISO builder action #92

Job	Run time
Build (amd64, 39, base)	2m 53s
Build (amd64, 39, silverblue)	2m 44s
Build (amd64, 39, kinoite)	2m 51s
Build (amd64, 40, base)	2m 17s
Build (amd64, 40, silverblue)	2m 37s
Build (amd64, 40, kinoite)	2m 50s
Build (amd64, rawhide, base)	2m 32s
Build (amd64, rawhide, silverblue)	2m 31s
Build (amd64, rawhide, kinoite)	2m 38s
Build (arm64, 39, base)	2m 40s
Build (arm64, 39, silverblue)	2m 57s
Build (arm64, 39, kinoite)	3m 22s
Build (arm64, 40, base)	2m 30s
Build (arm64, 40, silverblue)	2m 29s
Build (arm64, 40, kinoite)	2m 35s
Build (arm64, rawhide, base)	2m 22s
Build (arm64, rawhide, silverblue)	2m 23s
Build (arm64, rawhide, kinoite)	2m 28s
Check all builds successful	1s
	47m 40s

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