[gnome-software] (6 commits) Non-fast-forward update to branch wip/mak/libas

[Matthias Klumpp <mak src gnome org>]

The branch 'wip/mak/libas' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c8404ce... Port to appstream
  7fe019c... Fix tests for AppStream transition
  4f34d60... Delete defunct remnants of shell-extension support
  269339f... Use separate enum for OS update pseudo-apps
  c1bd6e9... Replace AS_URL_KIND_MISSING with explicit property
  76e3802... trivial: Suggest using appstreamcli for NEWS/validate
  68883c1... hack: Make CI work (temporary commit)

Commits added to the branch:

  6d548ff... Port to appstream
  9fd4fc1... Delete defunct remnants of shell-extension support
  1dea206... Use separate enum for OS update pseudo-apps
  67c711e... Replace AS_URL_KIND_MISSING with explicit property
  e00a61a... trivial: Suggest using appstreamcli for NEWS/validate
  2195300... hack: Make CI work (temporary commit)