common: don't distribute generated GDBus files in tarballs
common: don't distribute generated GDBus files in tarballs

Signed-off-by: Simon McVittie <0e1aea601907c1a85c2dc96e5ea37e23c58d2e9b@debian.org>

GeorgesStavracas/flatpak,GeorgesStavracas/flatpak,amigadave/flatpak,GeorgesStavracas/flatpak,handsome-feng/flatpak,GeorgesStavracas/flatpak,flatpak/flatpak,handsome-feng/flatpak,matthiasclasen/flatpak,amigadave/flatpak,handsome-feng/flatpak,GeorgesStavracas/flatpak,handsome-feng/flatpak,flatpak/flatpak,flatpak/flatpak,handsome-feng/flatpak,flatpak/flatpak,matthiasclasen/flatpak,amigadave/flatpak,matthiasclasen/flatpak,amigadave/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak