ci: build kde raw on large runners #373

Job	Run time
live-iso (x86_64, flagship/flagship-live)	22m 47s
image (x86_64, base/base-disk)	19m 35s
live-iso (x86_64, gnome/gnome-live)	1m 54s
image (x86_64, flagship/base-disk)	30m 56s
live-iso (x86_64, kde/kde-live)	32m 37s
image (x86_64, gnome/base-disk)	2m 30s
live-iso (x86_64, xfce/xfce-live)	21m 6s
image (x86_64, kde/base-disk)	3m 38s
live-iso (aarch64, flagship/flagship-live)	31m 19s
image (x86_64, xfce/base-disk)	30m 57s
live-iso (aarch64, gnome/gnome-live)	13m 0s
image (aarch64, base/base-disk)	20m 23s
live-iso (aarch64, kde/kde-live)	25m 44s
image (aarch64, flagship/base-disk)	20m 59s
live-iso (aarch64, xfce/xfce-live)	28m 36s
image (aarch64, gnome/base-disk)	13m 32s
image (aarch64, kde/base-disk)	19m 41s
image (aarch64, xfce/base-disk)	18m 40s
push-image	0s
	5h 57m 54s

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