Add email css to layout

Author: johnpaulashenfelter

app/views/layouts/mailer.html.erb

@@ -8,7 +8,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1">
 
-    <%= stylesheet_link_tag "foundation_emails" %>
+    <%= stylesheet_link_tag "foundation_emails-20250913" %>
 
     <style type="text/css">
         @media only screen and (max-width:480px) {