Add frozen_string_literal to qa/

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

qa/qa/ce/strategy.rb

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

qa/qa/git/location.rb

+# frozen_string_literal: true
+
 require 'uri'
 require 'forwardable'

qa/qa/page/component/dropzone.rb

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

qa/qa/page/component/select2.rb

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

qa/qa/page/dashboard/projects.rb

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

qa/qa/page/element.rb

+# frozen_string_literal: true
+
 module QA
   module Page
     class Element

qa/qa/page/file/form.rb

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

qa/qa/page/file/shared/commit_message.rb

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

qa/qa/page/file/show.rb

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

qa/qa/page/group/new.rb

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

qa/qa/page/issuable/sidebar.rb

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

qa/qa/page/label/new.rb

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

qa/qa/page/layout/banner.rb

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

qa/qa/page/main/login.rb

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

qa/qa/page/main/oauth.rb

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

qa/qa/page/mattermost/login.rb

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

qa/qa/page/mattermost/main.rb

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

qa/qa/page/merge_request/new.rb

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

qa/qa/page/profile/personal_access_tokens.rb

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

qa/qa/page/project/activity.rb

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