[vala] Non-fast-forward update to branch wip/ci

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/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:

  4489e19... ci: Add .gitlab-ci.yml
  bed7e2f... ci: Add pipeline and coverage badges to README.md
  2c1ed04... ci: Fetch git tags
  e32fc82... ci: Add ubuntu clang x64 job

Commits added to the branch:

  bc9f0f1... ci: Add .gitlab-ci.yml