⬆️ Update quay.io/kairos/auroraboot Docker tag to v0.15.0 #3636

Job	Run time
factory (ubuntu:24.04) / ubuntu:24.04-core-amd64-generic-uki	6m 21s
factory (ubuntu:24.04, k3s) / ubuntu:24.04-standard-amd64-generic-k3s-uki	6m 35s
factory (fedora:40) / fedora:40-core-amd64-generic-uki	4m 18s
factory (fedora:40, k3s) / fedora:40-standard-amd64-generic-k3s-uki	5m 8s
factory (ubuntu:25.10) / ubuntu:25.10-core-amd64-generic-uki	6m 57s
factory (ubuntu:25.10, k3s) / ubuntu:25.10-standard-amd64-generic-k3s-uki	7m 38s
test_boot_assessment (ubuntu:24.04, amd64, generic, core)	17m 48s
test_generic (ubuntu:25.10, amd64, generic, standard)	32m 1s
test_generic (ubuntu:25.10, amd64, generic, core)	31m 24s
test_generic (fedora:40, amd64, generic, standard)	18m 56s
test_generic (ubuntu:24.04, amd64, generic, standard)	27m 56s
test_generic (fedora:40, amd64, generic, core)	16m 0s
test_generic (ubuntu:24.04, amd64, generic, core)	29m 32s
	3h 30m 34s

Provide feedback