update changelog

Author: RobinMalfait

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Remove opacity variables from `:visited` pseudo class ([#7458](https://github.com/tailwindlabs/tailwindcss/pull/7458))
 - Support arbitrary values + calc + theme with quotes ([#7462](https://github.com/tailwindlabs/tailwindcss/pull/7462))
+- Implement `getClassOrder` instead of `sortClassList` ([#7459](https://github.com/tailwindlabs/tailwindcss/pull/7459))
 
 ## [3.0.22] - 2022-02-11