Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Use `length` data type for `background-size` instead of `background-position` ([#13771](https://github.com/tailwindlabs/tailwindcss/pull/13771))
+- Support negative values for `col-start`/`col-end` utilities ([#13780](https://github.com/tailwindlabs/tailwindcss/pull/13780))
 
 ## [4.0.0-alpha.15] - 2024-05-08