Merge branch 'registry-test-metadata' into 'master'

Restrict omnibus self-managed registry test to pipeline main

See merge request gitlab-org/gitlab!66350

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

 # frozen_string_literal: true
 
 module QA
-  RSpec.describe 'Package', :registry, :orchestrated do
+  RSpec.describe 'Package', :registry, :orchestrated, only: { pipeline: :main } do
     describe 'Self-managed Container Registry' do
       let(:project) do
         Resource::Project.fabricate_via_api! do |project|