manifest: More force rebuilds for libffi soname bump
manifest: More force rebuilds for libffi soname bump

The previous one didn't seem to take.

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