Updates loading icon in commit's page

For the dropdowns in the mini pipeline graph it
updates the loading icon to use the new orange version

app/views/shared/_mini_pipeline_graph.html.haml

@@ -13,5 +13,5 @@
             %ul
 
           %li.js-builds-dropdown-loading.hidden
-            .text-center
-              %i.fa.fa-spinner.fa-spin{ 'aria-hidden': 'true', 'aria-label': 'Loading' }
+            .loading-container.text-center
+              %span.spinner{ 'aria-label': 'Loading' }

changelogs/unreleased/61990-spinner.yml

+---
+title: Updates loading icon in commits page
+merge_request: 28475
+author:
+type: fixed