Merge branch 'admin-notifications-migration' into 'master'

Migrate button in app/views/users/unsubscribes/show.html.haml

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/142226



Merged-by: Simon Knox <simon@gitlab.com>
Approved-by: Serhii Yarynovskyi <syarynovskyi@gitlab.com>
Approved-by: Simon Knox <simon@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Co-authored-by: Annabel Dunstone Gray <annabel.dunstone@gmail.com>

app/views/users/unsubscribes/show.html.haml

 - page_title _("Unsubscribe"), _("Admin Notifications")
 %h1.page-title.gl-font-size-h-display Unsubscribe from Admin notifications
 
-%hr
 = form_tag unsubscribe_path(Base64.urlsafe_encode64(@email)) do
   %p
     Yes, I want to unsubscribe
     %strong= @email
     from any further admin emails.
-  .form-actions
-    = submit_tag 'Unsubscribe', class: 'gl-button btn btn-confirm'
+  = render Pajamas::ButtonComponent.new(type: :submit, variant: :confirm) do
+    = _('Unsubscribe')