Update README.md

Author: kaiaai

README.md

@@ -88,6 +88,10 @@ Now you can handle connecting to WiFi as you see fit, instead of Micro-ROS doing
 ```
 
 ## Change Log
+v2.0.7-iron.4
+- merged all commits from the forked-from repo
+  - adds esp32s3 build support
+
 v2.0.7-iron.4
 - added KaiaaiTelemetry2 message
 - compiler warning fix