Promote end-to-end test to blocking

Promote to blocking: Govern Vulnerability management in a merge reque...

qa/qa/specs/features/ee/browser_ui/10_govern/vulnerability_management_spec.rb

@@ -135,7 +135,7 @@ module QA
         verify_vulnerability_dismissed(vulnerability: security_finding_name)
       end
 
-      it 'can create an issue from a security finding in pipeline security tab',
+      it 'can create an issue from a security finding in pipeline security tab', :blocking,
         testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/383756' do
         visit_pipeline_security_tab
         EE::Page::Project::Secure::PipelineSecurity.perform do |pipeline_security|