Fix spam logs pagination

app/views/admin/spam_logs/index.html.haml

@@ -17,6 +17,6 @@
           %th Primary Action
           %th
       = render @spam_logs
-  = paginate @spam_logs
+  = paginate @spam_logs, theme: 'gitlab'
 - else
   %h4 There are no Spam Logs

changelogs/unreleased/50047-spam-logs-pagination.yml

+---
+title: Add gitlab theme to spam logs pagination
+merge_request: 21145
+author:
+type: fixed