update changelog

Author: MinjiK

CHANGELOG.md

@@ -4,6 +4,8 @@ Decommissioned Safe Place API
 
 Removed [bluebird](https://github.com/petkaantonov/bluebird/) from dependencies
 
+Minor code improvement, Big thanks to [Mohammed Alsammarrai](https://github.com/Darseen) for his contribution!
+
 ## 9.1.0 - 2023-12-11
 Add support for additional parameters with [Flight Offers Price API](https://developers.amadeus.com/self-service/category/flights/api-doc/flight-offers-price)