update Changelog

Author: bnasslahsen

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.25] -
+### Fixed
+- Fix double registration of model converters when grouped api is used #324
+### Added
+- Added support for multiple OpenAPI definitions in spring webflux #329
+
 ## [1.2.24] -
 ### Changed
 - Improve beans loading, if projects uses the UI only #321