update CHANGELOG.md

Author: marwen-abid

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix message when adding unknown trustline [#388](https://github.com/stellar/stellar-disbursement-platform-frontend/pull/388)
 
 ### Security and Dependencies
+- Upgrade React to 19.2.1 to address CVE-2025-66478 and CVE-2025-55182 [#390](https://github.com/stellar/stellar-disbursement-platform-backend/pull/390)
 - Bump the minor-and-patch group across 1 directory with 30 updates. [#386](https://github.com/stellar/stellar-disbursement-platform-frontend/pull/386)
 - Bump the all-actions group across 1 directory with 4 updates. [#383](https://github.com/stellar/stellar-disbursement-platform-frontend/pull/383)
 - Bump js-yaml from 4.1.0 to 4.1.1. [#381](https://github.com/stellar/stellar-disbursement-platform-frontend/pull/381)