fix phosphor-icons url

Author: mtayllan

app/views/layouts/application.html.erb

@@ -13,7 +13,7 @@
     <%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
     <%= javascript_importmap_tags %>
 
-    <script src="https://unpkg.com/@phosphor-icons/web"></script>
+    <script src="https://cdn.jsdelivr.net/npm/@phosphor-icons/web"></script>
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap" rel="stylesheet">