[gnome-software] Non-fast-forward update to branch 1196-race-condition-under-gs_plugin_icons_load_cached

[Milan Crha <mcrha src gnome org>]

The branch '1196-race-condition-under-gs_plugin_icons_load_cached' 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:

  bfc9e8a... gs-plugin-icons: Lock GsApp to prevent thread race conditio

Commits added to the branch:

  e1aade4... GsApp: Add thread safety around remote icons download