Fix difference between button sizes

ee/app/assets/javascripts/security_dashboard/components/csv_export_button.vue

@@ -75,7 +75,7 @@ export default {
       v-if="!isPreparingCsvExport"
       ref="exportIcon"
       name="export"
-      class="mr-0 position-top-0"
+      class="mr-0 gl-display-block"
     />
     <gl-popover
       ref="popover"

ee/changelogs/unreleased/225368-fix-nav-buttons-sizes.yml

+---
+title: Fix difference between button sizes in the instance level security dashboard
+merge_request: 36668
+author:
+type: fixed