feat: add LambdaTest sponsorship to README

Author: Siumauricio

README.md

@@ -77,6 +77,10 @@ For detailed documentation, visit [docs.dokploy.com](https://docs.dokploy.com).
 <div>
   <a href="https://www.hostinger.com/vps-hosting?ref=dokploy"><img src=".github/sponsors/hostinger.jpg" alt="Hostinger" width="300"/></a>
   <a href="https://www.lxaer.com/?ref=dokploy"><img src=".github/sponsors/lxaer.png" alt="LX Aer" width="100"/></a>
+        <a href="https://www.lambdatest.com/?utm_source=dokploy&utm_medium=sponsor" target="_blank">
+            <img src="https://www.lambdatest.com/blue-logo.png"  width="450" height="100" />
+        </a>
+
 </div>
 
 <!-- Premium Supporters 🥇 -->