Don’t exclude some file in lib from rubocop

lib/tasks/gitlab/import_export.rake

lib/tasks/gitlab/info.rake

lib/tasks/gitlab/shell.rake

lib/tasks/gitlab/sidekiq.rake

lib/tasks/gitlab/task_helpers.rb

lib/tasks/gitlab/test.rake

lib/tasks/gitlab/track_deployment.rake

lib/tasks/gitlab/update_templates.rake

lib/tasks/gitlab/web_hook.rake

lib/tasks/lint.rake

lib/tasks/migrate/migrate_iids.rake

lib/tasks/services.rake

lib/tasks/sidekiq.rake

lib/tasks/spec.rake

lib/tasks/spinach.rake