Quarantine flaky security reports spec

qa/qa/specs/features/ee/browser_ui/secure/security_reports_spec.rb

@@ -76,7 +76,8 @@ module QA
         end
       end
 
-      it 'displays security reports in the project security dashboard' do
+      # Failure issue: https://gitlab.com/gitlab-org/gitlab/issues/34342
+      it 'displays security reports in the project security dashboard', :quarantine do
         Page::Project::Menu.perform(&:click_project)
         Page::Project::Menu.perform(&:click_on_security_dashboard)