update changelog

Author: emilykl

CHANGELOG.md

@@ -9,7 +9,7 @@ To see all merged commits on the master branch that will be part of the next plo
 
 where X.Y.Z is the semver of most recent plotly.js release.
 
-## [X.Y.Z] -- UNRELEASED
+## [3.0.1] -- 2025-02-18
 
 ### Changed
 - Update `color-rgba` from 2.1.1 to 3.0.0 to fix hsl color conversion bug [[#7325](https://github.com/plotly/plotly.js/pull/7325)]