Update the changelog

Author: Yuki-YuXin

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## [1.9.0]
 * Add feature flags provider to be controlled from broker (#2540)
 * Added GitHub issue templates for better issue tracking and reporting (#2554)
+* Removed Native Auth legacy public interface (#2582)
 
 ## [1.8.1]
 * Cherry pick DUNA "resume" action fix #2558