Merge branch 'bvl-skip-ci-for-crowdin' into 'master'

Append `skip ci` to Crowdin commit messages

See merge request gitlab-org/gitlab-ee!6432

crowdin.yml

 project_identifier: 'gitlab-ee'
 api_key_env: CROWDIN_API_KEY
 preserve_hierarchy: true
+commit_message: [skip ci]
 
 files:
   - source: /locale/gitlab.pot