[gtk] (3 commits) Non-fast-forward update to branch ci-installed-tests

[Matthias Clasen <matthiasc src gnome org>]

The branch 'ci-installed-tests' 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:

  0d3ed47... ci: Add a build that runs installed tests
  3c50914... installed-tests: Fix the icontheme test
  81df523... cups: Don't emit a warning if we can't talk to avahi

Commits added to the branch:

  7cf61e6... ci: Add a build that runs installed tests
  28a9fa2... installed-tests: Fix the icontheme test
  5ecf143... cups: Don't emit a warning if we can't talk to avahi