Regenerate locale/gitlab.pot

What does this MR do?

Fixes master:broken issue https://gitlab.com/gitlab-org/gitlab-ee/issues/10565 by regenerating locale/gitlab.pot

What are the relevant issue numbers?

• https://gitlab.com/gitlab-org/gitlab-ee/issues/10565

Does this MR meet the acceptance criteria?

• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides

Closes #10565 (closed)