Update 6_release tests to use outer describe

Remove monkey-patch for RSpec

qa/qa/specs/features/browser_ui/6_release/deploy_key/add_deploy_key_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Release' do
+  RSpec.describe 'Release' do
     describe 'Deploy key creation' do
       it 'user adds a deploy key' do
         Flow::Login.sign_in

qa/qa/specs/features/browser_ui/6_release/deploy_key/clone_using_deploy_key_spec.rb

@@ -3,7 +3,7 @@
 require 'digest/sha1'
 
 module QA
-  context 'Release', :docker, :runner do
+  RSpec.describe 'Release', :docker, :runner do
     describe 'Git clone using a deploy key' do
       before do
         Flow::Login.sign_in

qa/qa/specs/features/browser_ui/6_release/deploy_token/add_deploy_token_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Release', quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/213222', type: :flaky } do
+  RSpec.describe 'Release', quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/213222', type: :flaky } do
     describe 'Deploy token creation' do
       it 'user adds a deploy token' do
         Flow::Login.sign_in

qa/qa/specs/features/browser_ui/6_release/pipeline/parent_child_pipelines_dependent_relationship_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Release', :docker do
+  RSpec.describe 'Release', :docker do
     describe 'Parent-child pipelines dependent relationship' do
       let!(:project) do
         Resource::Project.fabricate_via_api! do |project|

qa/qa/specs/features/browser_ui/6_release/pipeline/parent_child_pipelines_independent_relationship_spec.rb

 # frozen_string_literal: true
 
 module QA
-  context 'Release', :docker do
+  RSpec.describe 'Release', :docker do
     describe 'Parent-child pipelines independent relationship' do
       let!(:project) do
         Resource::Project.fabricate_via_api! do |project|

qa/qa/specs/features/ee/browser_ui/6_release/multi-project_pipelines_spec.rb

@@ -3,7 +3,7 @@
 require 'securerandom'
 
 module QA
-  context 'Release', :docker do
+  RSpec.describe 'Release', :docker do
     describe 'Multi-project pipelines' do
       let(:upstream_project_name) { "upstream-project-#{SecureRandom.hex(8)}" }
       let(:downstream_project_name) { "downstream-project-#{SecureRandom.hex(8)}" }

qa/qa/specs/features/ee/browser_ui/6_release/pipelines_for_merged_results_and_merge_trains_spec.rb

@@ -3,7 +3,7 @@
 require 'securerandom'
 
 module QA
-  context 'Release', :docker, :runner do
+  RSpec.describe 'Release', :docker, :runner do
     describe 'Pipelines for merged results and merge trains' do
       before(:context) do
         @group = Resource::Group.fabricate_via_api!