Add frozen_string_literal to qa/ee

This will be default in Ruby 3, so will be good to apply in QA ahead of
time to be consistent.

qa/qa/ee.rb

+# frozen_string_literal: true
+
 module QA
   ##
   # GitLab EE extensions

qa/qa/ee/page/admin/geo/nodes/new.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/admin/geo/nodes/show.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/admin/license.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/dashboard/projects.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/main/banner.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/project/issue/index.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/project/settings/protected_branches.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/page/project/show.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Page

qa/qa/ee/runtime/env.rb

+# frozen_string_literal: true
+
 # Prepended onto ::QA::Runtime::Env
 module QA
   module EE

qa/qa/ee/runtime/geo.rb

+# frozen_string_literal: true
+
 # EE-only singleton
 module QA
   module EE

qa/qa/ee/scenario/test/geo.rb

+# frozen_string_literal: true
+
 require 'net/http'
 require 'json'
 

qa/qa/ee/strategy.rb

+# frozen_string_literal: true
+
 module QA
   module EE
     module Strategy

qa/spec/ee/runtime/geo_spec.rb

+# frozen_string_literal: true
+
 describe ::QA::EE::Runtime::Geo do
   describe '.max_db_replication_time' do
     subject { described_class.max_db_replication_time }