skip bounce from audit

lib/submissions/generate_audit_trail.rb

@@ -379,7 +379,9 @@ module Submissions
 
       composer.text(I18n.t('event_log'), font_size: 12, padding: [10, 0, 20, 0])
 
-      events_data = submission.submission_events.sort_by(&:event_timestamp).map do |event|
+      events_data = submission.submission_events.sort_by(&:event_timestamp).filter_map do |event|
+        next if event.event_type.in?(%w[bounce_email complaint_email])
+
         submitter = submission.submitters.find { |e| e.id == event.submitter_id }
         submitter_name =
           if event.event_type.include?('sms') || event.event_type.include?('phone')