Update to gitlab-shell 3.6.6
What does this MR do?
This updates gitlab-shell to version 3.6.6
Does this MR meet the acceptance criteria?
-
CHANGELOG entry added - Tests
-
All builds are passing
-
-
Conform by the merge request performance guides -
Conform by the style guides -
Branch has no merge conflicts with master(if it does - rebase it please) -
Squashed related commits together