Update CHANGELOG.md (#9638)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: community-scripts-pr-app[bot]

CHANGELOG.md

@@ -12,6 +12,10 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
 ## 2025-12-04
 
+### 🆕 New Scripts
+
+  - Three-tier defaults system | security improvements | error_handler | improved logging | improved container creation | improved architecture [@MickLesk](https://github.com/MickLesk) ([#9540](https://github.com/community-scripts/ProxmoxVE/pull/9540))
+
 ## 2025-12-03
 
 ### 🚀 Updated Scripts