Update to btn-confirm and align subscription banner

ee/app/views/layouts/header/_ee_subscribable_banner.html.haml

@@ -6,7 +6,7 @@
     .gl-alert.gitlab-ee-license-banner.hidden.js-gitlab-ee-license-banner.gl-pb-7.gl-border-1.gl-border-solid.gl-border-gray-100.gl-rounded-base{ role: 'alert', data: { license_expiry: subscribable.expires_at } }
       %button.gl-alert-dismiss{ type: 'button', 'aria-label' => 'Dismiss', data: { track_event: 'click_button', track_label: 'dismiss_subscribable_banner' } }
         = sprite_icon('close', css_class: 'gl-icon js-close')
-      .gl-display-flex.gl-flex-direction-row
+      .gl-display-flex.gl-flex-direction-row.gl-align-items-center
         .gl-pr-6.gl-pl-5.gl-pt-3.gl-display-none.gl-sm-display-block
           - if subscribable.expired?
             - if subscribable.block_changes?
@@ -19,7 +19,7 @@
           = message
 
           - if subscribable.block_changes?
-            = link_to _('Upgrade your plan'), upgrade_subscription_path, class: 'btn gl-button btn-primary', data: { track_event: 'click_text', track_label: 'subscribable_action', track_property: 'upgrade' }
+            = link_to _('Upgrade your plan'), upgrade_subscription_path, class: 'btn gl-button btn-confirm', data: { track_event: 'click_text', track_label: 'subscribable_action', track_property: 'upgrade' }
           - else
-            = link_to _('Renew subscription'), renew_subscription_path, class: 'btn gl-button btn-primary gl-mr-3 gl-mb-2', data: { track_event: 'click_text', track_label: 'subscribable_action', track_property: 'renew' }
+            = link_to _('Renew subscription'), renew_subscription_path, class: 'btn gl-button btn-confirm gl-mr-3 gl-mb-2', data: { track_event: 'click_text', track_label: 'subscribable_action', track_property: 'renew' }
             = link_to _('That is ok, I do not want to renew'), '#', data: { track_event: 'click_text', track_label: 'subscribable_action', track_property: 'thats_ok' }, 'aria-label' => 'Dismiss', class: 'btn gl-button btn-info btn-info-secondary js-close gl-mb-2'