gnome-base/gnome-control-center: guarantee a working Night Light functionality
Night Light isn't behind USE=colord (not optional), but requires
gnome-settings-daemon[colord], so unconditionally depend on that.
Raise cups dep to 1.7 while here, as it uses an enum constant introduced there
and we don't backport the fix for that from gnome-3-24 branch. No practical
difference, as there is no such old version in-tree anymore.
Closes: https://bugs.gentoo.org/619298
Package-Manager: Portage-2.3.19, Repoman-2.3.6