update sponsors

Author: ysmood

README.md

@@ -38,6 +38,31 @@ a lot of usage examples are recorded there.
 
 If you have questions, please raise an [issues](https://github.com/go-rod/rod/issues)/[discussions](https://github.com/go-rod/rod/discussions) or join the [chat room][discord room].
 
+## Sponsors
+
+Rod is sponsored by many organizations and individuals, thank you for your support!
+
+Please contact [yad@ysmood.org](mailto:yad@ysmood.org) if you want to be listed here.
+
+<!-- markdownlint-disable MD033 -->
+
+<table style="border-collapse: collapse">
+  <tr>
+    <td>
+      <p>Browser testing via</p>
+      <a href="https://www.testmuai.com/?utm_medium=sponsor&utm_source=go-rod" target="_blank">
+        <img
+          src="https://github.com/user-attachments/assets/3efebe85-726b-49f1-b4c9-7c0103b192f3"
+          alt="TestMu AI Logo"
+          height="90"
+        />
+      </a>
+    </td>
+  </tr>
+</table>
+
+<!-- markdownlint-enable MD033 -->
+
 ## Join us
 
 Your help is more than welcome! Even just open an issue to ask a question may greatly help others.