[skip ci] update CHANGELOG

Author: jcheron

CHANGELOG.md

@@ -5,7 +5,8 @@ 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).
 
 ## [Unrelease]
-- Nothing
+### Fixed
+- php8.2 depreciation in `UDateTime` `elapsed` (dynamic properties)
 
 ## [2.5.2] 2023-02-05
 > `composer global update` is required before creating a new project