maybe fix chromebooks? #352

Job	Run time
live-iso (x86_64, flagship/flagship-live)	1m 25s
image (x86_64, base/base-disk)	1m 23s
live-iso (x86_64, gnome/gnome-live)	1m 21s
image (x86_64, flagship/base-disk)	1m 23s
live-iso (x86_64, kde/kde-live)	1m 12s
image (x86_64, gnome/base-disk)	1m 24s
live-iso (x86_64, xfce/xfce-live)	1m 21s
image (x86_64, kde/base-disk)	1m 22s
live-iso (aarch64, flagship/flagship-live)	1m 9s
image (x86_64, xfce/base-disk)	1m 21s
live-iso (aarch64, gnome/gnome-live)	1m 8s
image (aarch64, base/base-disk)	1m 8s
live-iso (aarch64, kde/kde-live)	1m 8s
image (aarch64, flagship/base-disk)	1m 9s
live-iso (aarch64, xfce/xfce-live)	1m 8s
image (aarch64, gnome/base-disk)	5s
image (aarch64, kde/base-disk)	5s
image (aarch64, xfce/base-disk)	5s
push-image	1s
	19m 18s

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