Updated changelog file

Author: sunil-lakshman

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [v1.19.1](https://github.com/contentstack/contentstack-management-javascript/tree/v1.19.1) (2025-01-27)
+ - Feature
+   - Added support for get entry references
+   - Added delay sanity testcases
+   - Axios, webpack, form-data, qs version bump
+
 ## [v1.19.0](https://github.com/contentstack/contentstack-management-javascript/tree/v1.19.0) (2025-01-13)
  - Feature
    - Release 2.0 feature