Update changelog

Author: T4rk1n

Diff for: CHANGELOG.md

@@ -27,6 +27,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - [#2265](https://github.com/plotly/dash/pull/2265) Removed deprecated `before_first_request` as reported in [#2177](https://github.com/plotly/dash/issues/2177).
 - [#2257](https://github.com/plotly/dash/pull/2257) Fix tuple types in the TypeScript component generator.
 - [#2293](https://github.com/plotly/dash/pull/2293) Fix Dropdown useMemo not detecting equal objects
+- [#2277](https://github.com/plotly/dash/pull/2277) Use dropdown styles from node_modules, instead of from stored css file
 
 ### Changed