build: Update Quill imageUploader

spec/dummy/app/assets/stylesheets/active_admin.scss

@@ -14,6 +14,8 @@
 @import 'activeadmin/quill_editor/quill.snow';
 @import 'activeadmin/quill_editor_input';
 
+@import 'activeadmin/quill.imageUploader.min';
+
 // Overriding any non-variable SASS must be done after the fact.
 // For example, to change the default status-tag color:
 //