update c# release info [deploy site]

Author: harsha509

website_and_docs/layouts/downloads/list.html

@@ -79,7 +79,7 @@
     <div class="card-body">
       <h2 class="card-title">C# NuGet</h2>
       <p class="card-text w-lg-75">
-        Nuget latest release is 4.8.2. Released on March 24, 2023.
+        Nuget latest release is 4.9.1. Released on May 08, 2023.
       </p>
       <ul>
         <li>