Merge branch 'fix/add-onetrust-partial-to-trials-select' into 'master'

Add OneTrust partial to /-/trials/select/ view

See merge request gitlab-org/gitlab!81858

ee/app/views/trials/select.html.haml

 - page_title _('Start a Free Ultimate Trial')
 - content_for :page_specific_javascripts do
   = render "layouts/google_tag_manager_head"
+  = render "layouts/one_trust"
 = render "layouts/google_tag_manager_body"
 
 .row