Merge pull request #1440 from trufflesuite/content/sunset-banner-update

Updating banner to include sunsetting note

custom_theme/main.html

@@ -20,7 +20,8 @@
     height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
   <!-- End Google Tag Manager (noscript) -->
 
-  <a href="https://ganache.dev" rel="follow" target="_blank" title="Interactive JSON-RPC Documentation (opens in a new tab)">
-    <strong>Introducing ganache.dev</strong> <em>Interactive <abbr title="JSON-RPC is the protocol dapps (decentralized applications) use to communicate with Ethereum nodes.">JSON-RPC</abbr> Documentation</em>!
+  <a href="https://consensys.io/blog/consensys-announces-the-sunset-of-truffle-and-ganache-and-new-hardhat?utm_source=github&utm_medium=referral&utm_campaign=2023_Sep_truffle-sunset-2023_announcement_" rel="follow" target="_blank" title="Truffle Suite is being sunset (opens in a new tab)" style="text-decoration: none;">
+    Truffle Suite is being sunset. For ongoing support and migration options click here. Thank you for your longstanding support.
   </a>
 {% endblock %}
+