Ignore label and assignment actions

lib/open_project/github_integration/notification_handlers.rb

@@ -35,8 +35,10 @@ module OpenProject::GithubIntegration
     #   repository: <the repository in action>
     # }
     def self.pull_request(payload)
-      # Don't add comments on new pushes to the pull request
+      # Don't add comments on new pushes to the pull request => ignore synchronize.
-      return if payload['action'] == 'synchronize'
+      # Don't add comments about assignments and labels either.
+      ignored_actions = %w['synchronize' 'assigned' 'unassigned' 'labeled' 'unlabeled']
+      return if ignored_actions.include? payload['action']
       comment_on_referenced_work_packages payload['pull_request']['body'], payload
     end