Add entry to CHANGELOG for this change

Author: oleksandr-pavlyk

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Update black version used in Python code style workflow [gh-1828](https://github.com/IntelPython/dpctl/pull/1828)
 * Fixed CI/CD workflow for building conda packages on Windows [gh-1831](https://github.com/IntelPython/dpctl/pull/1831)
+* Do not use Mambaforge variant of miniforge as deprecated [gh-1844](https://github.com/IntelPython/dpctl/pull/1844)
 
 ## [0.18.0] - Sept. XX, 2024