Update CHANGELOG.md

Author: nicolaskruchten

Diff for: CHANGELOG.md

@@ -2,7 +2,7 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
-## UNRELEASED
+## [5.13.0] - 2023-01-23
 
 ### Updated
   - Updated Plotly.js to from version 2.17.1 to version 2.18.0. See the [plotly.js CHANGELOG](https://github.com/plotly/plotly.js/blob/master/CHANGELOG.md#2180----2023-01-19) for more information. Notable changes include: