Update secondary nav element right margin to 8

MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/56794

app/assets/stylesheets/framework/secondary_navigation_elements.scss

@@ -108,7 +108,7 @@
     > .dropdown,
     > input,
     > form {
-      margin-right: $gl-padding-top;
+      margin-right: $gl-padding-8;
 
       &:last-child {
         margin-right: 0;

changelogs/unreleased/273297-update-issues-page-buttons.yml

+---
+title: Update secondary nav elements right margin to 8px
+merge_request: 56794
+author:
+type: changed