Update CHANGELOG.md (#7797)

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

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

CHANGELOG.md

@@ -16,6 +16,7 @@ Exercise vigilance regarding copycat or coat-tailing sites that seek to exploit
 
   - #### 🐞 Bug Fixes
 
+    - [core]: Update detection of current running subshell [@tremor021](https://github.com/tremor021) ([#7796](https://github.com/community-scripts/ProxmoxVE/pull/7796))
     - Paymenter: Installation and update fixes [@tremor021](https://github.com/tremor021) ([#7792](https://github.com/community-scripts/ProxmoxVE/pull/7792))
 
 ## 2025-09-21