trivial: Sync the flatpak manifest with the one from flathub
trivial: Sync the flatpak manifest with the one from flathub

fwupd/fwupd,fwupd/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,hughsie/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd