Update gschema-overrides.yml #951

Job	Run time
Build myOS (intel-amd/gnome.yml)	9m 21s
Build myOS (intel-amd/kde.yml)	11m 28s
Build myOS (intel-amd/cosmic.yml)	11m 7s
Build myOS (nvidia/gnome.yml)	8m 45s
Build myOS (nvidia/kde.yml)	11m 26s
Build myOS (nvidia/cosmic.yml)	10m 16s
Build myOS (intel-mac/gnome.yml)	8m 42s
Build myOS (intel-mac/kde.yml)	6m 38s
Build myOS (intel-mac/cosmic.yml)	6m 51s
Build myOS (surface/gnome.yml)	11m 27s
Build myOS (surface/kde.yml)	2m 55s
	1h 38m 56s

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