Enable the Style/TrailingCommaInLiteral cop

.rubocop.yml

app/controllers/autocomplete_controller.rb

app/controllers/concerns/lfs_request.rb

app/controllers/health_controller.rb

app/controllers/jwt_controller.rb

app/controllers/projects/issues_controller.rb

app/controllers/projects/lfs_api_controller.rb

app/controllers/projects/pipelines_controller.rb

app/controllers/projects/tree_controller.rb

app/controllers/projects_controller.rb

app/helpers/diff_helper.rb

app/helpers/emails_helper.rb

app/helpers/events_helper.rb

app/helpers/explore_helper.rb

app/helpers/markup_helper.rb

app/helpers/merge_requests_helper.rb

app/helpers/notes_helper.rb

app/helpers/search_helper.rb

app/helpers/selects_helper.rb

app/helpers/sorting_helper.rb