Update CHANGELOG.md (#4768)

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

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

CHANGELOG.md

@@ -18,7 +18,8 @@ All LXC instances created using this repository come pre-installed with Midnight
 
 ### 🆕 New Scripts
 
-  - Pulse ([#4728](https://github.com/community-scripts/ProxmoxVE/pull/4728))
+  - Backrest ([#4766](https://github.com/community-scripts/ProxmoxVE/pull/4766))
+- Pulse ([#4728](https://github.com/community-scripts/ProxmoxVE/pull/4728))
 
 ### 🚀 Updated Scripts