is_cff: also look for CFF2 tag
is_cff: also look for CFF2 tag

googlefonts/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,moyogo/fontbakery,googlefonts/fontbakery,graphicore/fontbakery,moyogo/fontbakery,graphicore/fontbakery,graphicore/fontbakery