Make commits author button confirm to Pajamas specs

The button has a hover appearance because of the additional
border. So that border is removed on the actual button
(applied on toggle-class prop)

app/assets/javascripts/projects/commits/components/author_select.vue

@@ -110,8 +110,8 @@ export default {
     <gl-new-dropdown
       :text="dropdownText"
       :disabled="hasSearchParam"
-      toggle-class="gl-py-3"
-      class="gl-dropdown w-100 mt-2 mt-sm-0"
+      toggle-class="gl-py-3 gl-border-0"
+      class="w-100 mt-2 mt-sm-0"
     >
       <gl-new-dropdown-header>
         {{ __('Search by author') }}

changelogs/unreleased/217743-match-commits-filter-author-button-to-spec.yml

+---
+title: Make commits author button confirm to Pajamas specs
+merge_request: 32821
+author:
+type: fixed