manifest: Rebuild harfbuzz and webkitgtk
manifest: Rebuild harfbuzz and webkitgtk

To shake out some potential ICU issues.

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