Resolve Rails/LinkToBlank rubocop offenses

Changelog: other
EE: true

.rubocop_todo.yml

@@ -498,12 +498,6 @@ Rails/InverseOf:
 Rails/LexicallyScopedActionFilter:
   Enabled: false
 
-# Offense count: 2
-# Cop supports --auto-correct.
-Rails/LinkToBlank:
-  Exclude:
-    - 'app/helpers/projects_helper.rb'
-    - 'ee/app/helpers/ee/users/callouts_helper.rb'
 
 # Offense count: 1
 # Cop supports --auto-correct.

app/helpers/projects_helper.rb

@@ -160,7 +160,7 @@ module ProjectsHelper
   end
 
   def link_to_autodeploy_doc
-    link_to _('About auto deploy'), help_page_path('topics/autodevops/stages.md', anchor: 'auto-deploy'), target: '_blank'
+    link_to _('About auto deploy'), help_page_path('topics/autodevops/stages.md', anchor: 'auto-deploy'), target: '_blank', rel: 'noopener'
   end
 
   def autodeploy_flash_notice(branch_name)

ee/app/helpers/ee/users/callouts_helper.rb

@@ -140,7 +140,7 @@ module EE
       end
 
       def add_migrate_to_hashed_storage_link(message)
-        migrate_link = link_to(_('For more info, read the documentation.'), help_page_path('administration/raketasks/storage.md', anchor: 'migrate-to-hashed-storage'), target: '_blank')
+        migrate_link = link_to(_('For more info, read the documentation.'), help_page_path('administration/raketasks/storage.md', anchor: 'migrate-to-hashed-storage'), target: '_blank', rel: 'noopener')
         linked_message = message % { migrate_link: migrate_link }
         linked_message.html_safe
       end