[mirotalksfu] - add version in about, fix avatar pin

app/src/Server.js

@@ -42,7 +42,7 @@ dependencies: {
  * @license For commercial or closed source, contact us at license.mirotalk@gmail.com or purchase directly via CodeCanyon
  * @license CodeCanyon: https://codecanyon.net/item/mirotalk-sfu-webrtc-realtime-video-conferences/40769970
  * @author  Miroslav Pejic - miroslav.pejic.85@gmail.com
- * @version 1.4.50
+ * @version 1.4.51
  *
  */