update changeLog

Author: harshithad0703

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## [v1.27.4](https://github.com/contentstack/contentstack-management-javascript/tree/v1.27.4) (2026-02-02)
  - Fix
    - Removed content-type header from the release delete method
+   - Plugin `onResponse` hook is now called for error responses; errors handled by the concurrency queue (e.g. 5xx, retries exhausted) were previously not running plugin hooks
 
 ## [v1.27.3](https://github.com/contentstack/contentstack-management-javascript/tree/v1.27.3) (2026-01-21)
  - Fix