ci: Enable FreeBSD CI in the official repository
ci: Enable FreeBSD CI in the official repository

Since we are unable to promote our FreeBSD runner to a shared runner,
we can only enable it in GNOME group. This should avoid problems when
submitting merge requests from forks.

endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib,endlessm/glib