Update CHANGELOG.md

For #1711

Author: schloerke

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### New features
 
+* Added support for python 3.13. (#1711)
+
 * `ui.sidebar()` is now interactively resizable. (#2020)
 
 * `ui.update_*()` functions now accept `ui.TagChild` (i.e., HTML) as input to the `label` and `icon` arguments. (#2020)