Rebuild rubocop TODOs after auto-correcting

lib/tasks/event_attatchments.rake

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 namespace :db do
   desc 'Destroy event_attachments versions'
 
@@ -5,4 +7,4 @@ namespace :db do
     PaperTrail::Version.where(item_type: 'EventAttachment').try(:destroy_all)
     puts 'Version records with event_attachment have been destroyed'
   end
-end
+end