trivial: Use the new fwupd_client_get_upgrades() in fwupdmgr
trivial: Use the new fwupd_client_get_upgrades() in fwupdmgr

fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,superm1/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,superm1/fwupd,superm1/fwupd,hughsie/fwupd