Merge branch 'trial-button-confirm' into 'master'

Replace btn-primary with btn-confirm in Start your free trial button

See merge request gitlab-org/gitlab!53215

changelogs/unreleased/trial-button-confirm.yml

+---
+title: Replace btn-primary with btn-confirm in Start your free trial button
+merge_request: 53215
+author: Yogi (@yo)
+type: changed

ee/app/views/shared/billings/_billing_plan_header.html.haml

@@ -30,4 +30,4 @@
 
   - if namespace.eligible_for_trial?
     - glm_content = namespace_for_user ? 'user-billing' : 'group-billing'
-    %p= link_to 'Start your free trial', new_trial_registration_path(glm_source: 'gitlab.com', glm_content: glm_content), class: 'btn btn-primary gl-button'
+    %p= link_to 'Start your free trial', new_trial_registration_path(glm_source: 'gitlab.com', glm_content: glm_content), class: 'btn btn-confirm gl-button'