gitlab.pot needs regenerating

Job #286944052 failed for c15779df:

!!! Rake task gettext:updated_check raised RuntimeError:
/builds/gitlab-org/gitlab-ee/lib/tasks/gettext.rake:96:in `block (2 levels) in <main>': Newly translated strings found, please add them to `locale/gitlab.pot` by running: (RuntimeError)

  bin/rake gettext:regenerate

Then commit and push the resulting changes to `locale/gitlab.pot`.

The diff was:

+msgid "Star labels to start sorting by priority"
	from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `block in execute'
	from /builds/gitlab-org/gitlab-ee/vendor/ruby/2.6.0/gems/rake-12.3.2/lib/rake/task.rb:273:in `each'```