manifest.json: track vte-0-34 branch of vte
manifest.json: track vte-0-34 branch of vte

djdeath/gnome-ostree,djdeath/gnome-ostree,vrutkovs/vrutkovs.github.io,GNOME/gnome-ostree,chergert/gnome-continuous,GNOME/gnome-ostree,chergert/gnome-continuous,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,djdeath/gnome-ostree,vrutkovs/vrutkovs.github.io,GNOME/gnome-ostree