Merge branch 'qa-quarantine-promote-issue-to-epic-spec' into 'master'

Quarantine promote issue to epic spec

See merge request gitlab-org/gitlab-ee!14056

qa/qa/specs/features/browser_ui/2_plan/ee_epic/promote_issue_to_epic_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Plan' do
+  # https://gitlab.com/gitlab-org/quality/staging/issues/58
+  context 'Plan', :quarantine do
     describe 'promote issue to epic' do
       let(:issue_title) { "My Awesome Issue #{SecureRandom.hex(8)}" }