Add HarfBuzz to pkgconfig requires.private
Add HarfBuzz to pkgconfig requires.private

kari-lentz/alpha-pango,danny-ku/pango,kari-lentz/alpha-pango,kari-lentz/alpha-pango,Distrotech/pango,danny-ku/pango,danny-ku/pango,kari-lentz/alpha-pango,Distrotech/pango,Distrotech/pango