Revert "manifest: Untag gdm again"
Revert "manifest: Untag gdm again"

This reverts commit ca979905ce7f152dd6c52c568a000ca94f71fc0c.

vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,chergert/gnome-continuous