test: Add second icon pack

cypress/platform/architecture-external.html

@@ -20,6 +20,7 @@
       service s3(logos:aws-s3)[Cloud Store]
       service ec2(logos:aws-ec2)[Server]
       service api(logos:aws-api-gateway)[Api Gateway]
+      service fa(fa:image)[Font Awesome Icon]
     </pre>
 
     <script type="module">
@@ -34,6 +35,13 @@
           loader: () =>
             fetch('https://unpkg.com/@iconify-json/logos/icons.json').then((res) => res.json()),
         },
+        {
+          name: 'fa',
+          loader: () =>
+            fetch('https://unpkg.com/@iconify-json/fa6-regular/icons.json').then((res) =>
+              res.json()
+            ),
+        },
       ]);
       await mermaid.run();
       if (window.Cypress) {