Quarantine fulfillment tests due to bug

qa/qa/specs/features/ee/browser_ui/fulfillment/purchase/free_trial_spec.rb

 # frozen_string_literal: true
 
 module QA
-  RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging } do
+  RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging }, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/344516', type: :bug } do
     describe 'Purchase' do
       let(:user) do
         Resource::User.fabricate_via_api! do |user|

qa/qa/specs/features/ee/browser_ui/fulfillment/purchase/purchase_ci_spec.rb

 # frozen_string_literal: true
 
 module QA
-  RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging } do
+  RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging }, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/344516', type: :bug } do
     context 'Purchase CI minutes' do
       # the quantity of products to purchase
       let(:purchase_quantity) { 5 }

qa/qa/specs/features/ee/browser_ui/fulfillment/purchase/upgrade_group_spec.rb

 # frozen_string_literal: true
 
 module QA
-  RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging } do
+  RSpec.describe 'Fulfillment', :requires_admin, only: { subdomain: :staging }, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/344516', type: :bug } do
     describe 'Purchase' do
       describe 'group plan' do
         let(:hash) { SecureRandom.hex(4) }