feature: update banner for FGA Webinar

Author: byron-okta

views/website/navigation.pug

@@ -1,7 +1,7 @@
 .top-banner-bg
 .top-banner
   .top-banner-container
-    a(href="https://regionalevents.okta.com/soyouneedtobuildaloginbox/jwtio" target="_blank") Developers! Catch our webinar and see how to build with Auth0 in minutes.
+    a(href="https://pages.okta.com/2024-03-WBN-Introduce-FGA?_gl=1*1tgmuji*_ga*NzU5NTY0MzE1LjE2NzcyNjg2OTU.*_ga_QKMSDV5369*MTcxMDQyNjYzMS4zNDQuMS4xNzEwNDI5NjkxLjYwLjAuMA" target="_blank") Catch our webinar on next-gen authorization: Okta Fine-Grained Authorization
       span(aria-hiden="true") →
     button.close-top-banner +