Add changelog entry

Author: antonwolfy

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).
 
+## [0.18.2] - Nov. XX, 2024
+
+### Maintenance
+
+* Add missing include of SYCL header to "math_utils.hpp" [gh-1899](https://github.com/IntelPython/dpctl/pull/1899)
+
 ## [0.18.1] - Oct. 11, 2024
 
 ### Changed