add gh-2277 to changelog

Author: ndgrigorian

CHANGELOG.md

@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Enabled multiversion documentation for `dpctl` using a custom drop-down for version selection and a `--multiversion` option for documentation build helper script [gh-2276](https://github.com/IntelPython/dpctl/pull/2276)
 
 * Updated examples to remove use of `dpctl.tensor`, opting to simplify the examples and rely on `dpctl.memory` objects which wrap USM allocations [gh-2245](https://github.com/IntelPython/dpctl/pull/2245)
+* Removed deprecated property syntax from Cython files [gh-2277](https://github.com/IntelPython/dpctl/pull/2277)
 
 ## [0.21.1] - Nov. 29, 2025