debian: explicitly depend on shared-mime-info
debian: explicitly depend on shared-mime-info

This helps autopkgtest issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922331

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