chore: switch to new ISO builder action #91

Job	Run time
Build (amd64, 39, base)	2m 41s
Build (amd64, 39, silverblue)	2m 44s
Build (amd64, 39, kinoite)	3m 4s
Build (amd64, 40, base)	2m 10s
Build (amd64, 40, silverblue)	2m 24s
Build (amd64, 40, kinoite)	3m 22s
Build (amd64, rawhide, base)	2m 2s
Build (amd64, rawhide, silverblue)	2m 11s
Build (amd64, rawhide, kinoite)	2m 30s
Build (arm64, 39, base)	3m 27s
Build (arm64, 39, silverblue)	2m 54s
Build (arm64, 39, kinoite)	2m 50s
Build (arm64, 40, base)	2m 11s
Build (arm64, 40, silverblue)	2m 29s
Build (arm64, 40, kinoite)	2m 43s
Build (arm64, rawhide, base)	2m 20s
Build (arm64, rawhide, silverblue)	2m 17s
Build (arm64, rawhide, kinoite)	2m 49s
Check all builds successful	3s
	47m 11s

Provide feedback