chore: prepare changelog to 0.9.10 (#824)

Author: gshaibi

CHANGELOG.md

@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## [Unreleased]
 
+## [v0.9.10] - 2025-12-31
+
 ### Fixed
 - Fixed a bug where the scheduler would not consider topology constraints when calculating the scheduling constraints signature [#761](https://github.com/NVIDIA/KAI-Scheduler/pull/766) [gshaibi](https://github.com/gshaibi)