Update changelog

Author: adamwathan

CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Nothing yet!
+### Changed
+
+- Replace `--radius-none` and `--radius-full` theme values with static `rounded-none` and `rounded-full` utilities ([#13186](https://github.com/tailwindlabs/tailwindcss/pull/13186))
 
 ## [4.0.0-alpha.7] - 2024-03-08