[nautilus] Non-fast-forward update to branch fixing-CI

[Carlos Soriano <csoriano src gnome org>]

The branch 'fixing-CI' 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:

  ee15663... CI: Use 3.28 image until master is fixed
  3ff04a1... CI: Use the gnome image
  a83b677... This is not gonna work...is it?
  679adf8... Now maybe?
  c36cec1... ...
  312093b... test what @ernestask says
  48ee01c... run only headless tests
  591b84a... ...
  2486f00... ...

Commits added to the branch:

  2e331b6... CI: Use 3.28 image until master is fixed