update changelog

Author: KoolADE85

CHANGELOG.md

@@ -9,6 +9,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ## Changed
 - `dcc.Tab` now accepts a `width` prop which can be a pixel or percentage width for an individual tab.
+- `dcc.Tab` can accept other Dash Components for its label, in addition to a simple string.
 
 ## [4.0.0rc2] - 2025-10-10