Promote test to reliable

qa/qa/specs/features/browser_ui/5_package/container_registry_spec.rb

@@ -2,7 +2,7 @@
 
 module QA
   RSpec.describe 'Package' do
-    describe 'Container Registry', only: { subdomain: %i[staging pre] } do
+    describe 'Container Registry', :reliable, only: { subdomain: %i[staging pre] } do
       let(:project) do
         Resource::Project.fabricate_via_api! do |project|
           project.name = 'project-with-registry'