Update changelog and README

Author: Matthew Rousseau

exts/sl.sensor.camera/docs/CHANGELOG.md

@@ -2,6 +2,10 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [3.1.0] - 2025-06-26
+- Add support for ZED X Mini camera
+- Add new ZED X and ZED X Mini USD models
+
 ## [3.0.0] - 2025-03-20
 - Add support for Isaac Sim 4.5.0
 - Add support for ZED SDK 5.0.0

exts/sl.sensor.camera/docs/README.md

@@ -9,6 +9,7 @@ Please find the correct extension version compatible with your Isaac Sim version
 
 - Versions 1.X.X are compatible with Isaac Sim 2023.X.X.
 - Versions 2.X.X are compatible with Isaac Sim 4.X
+- Versions 3.X.X are compatible with Isaac Sim 5.X
 
 ## Getting started