Add gl-button style to admin area

- push hooks
- missing license

ee/app/views/admin/licenses/_upload_trial_license.html.haml

@@ -24,5 +24,5 @@
             .card.trial-license-preview.gl-mt-5
               = license_key
             .modal-footer.form-actions
-              %button.btn.btn-default{ type: 'button', data: { dismiss: 'modal' } } Cancel
+              %button.btn.gl-button.btn-default{ type: 'button', data: { dismiss: 'modal' } } Cancel
               = f.submit 'Install license', class: 'gl-button btn btn-primary'

ee/app/views/admin/push_rules/_merge_request_approvals.html.haml

@@ -3,7 +3,7 @@
   .settings-header
     %h4
       = _('Merge requests approvals')
-    %button.btn.js-settings-toggle{ type: 'button' }
+    %button.btn.gl-button.js-settings-toggle{ type: 'button' }
       = expanded_by_default? ? _('Collapse') : _('Expand')
     %p
       = _('Settings to prevent self-approval across all projects in the instance. Only an administrator can modify these settings.')

ee/app/views/admin/push_rules/show.html.haml

@@ -6,7 +6,7 @@
   .settings-header
     %h4
       = _('Push Rules')
-    %button.btn.js-settings-toggle{ type: 'button' }
+    %button.btn.gl-button.js-settings-toggle{ type: 'button' }
       = expanded_by_default? ? _('Collapse') : _('Expand')
     %p
       = _('Rules that define what git pushes are accepted for a project. All newly created projects will use these settings.')

ee/changelogs/unreleased/231160-update-push-hook-buttons.yml

+---
+title: Add gl-button style to admin area
+merge_request: 49610
+author:
+type: other