Merge branch '39444-make-margin-around-dropdown-dividers-4px' into 'master'

Resolve "Make margin around dropdown dividers 4px"

Closes #39444

See merge request gitlab-org/gitlab-ce!17517

app/assets/stylesheets/framework/dropdowns.scss

@@ -272,7 +272,7 @@
 
   .divider {
     height: 1px;
-    margin: 6px 0;
+    margin: #{$grid-size / 2} 0;
     padding: 0;
     background-color: $dropdown-divider-color;
 

changelogs/unreleased/39444-make-margin-around-dropdown-dividers-4px.yml

+---
+title: Set margins around dropdown dividers to 4px
+merge_request: 17517
+author:
+type: fixed