Move new CSS file after rebase

app/webpacker/css/admin/all.scss

@@ -23,6 +23,7 @@
 @import 'shared/icons';
 @import 'shared/forms';
 @import 'shared/layout';
+@import 'shared/scroll_bar';
 
 @import 'plugins/flatpickr-customization';
 @import 'plugins/powertip';