Update changelog

Author: adamwathan

CHANGELOG.md

@@ -27,6 +27,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - JIT: Add support for `before` and `after` pseudo-element variants and `content` utilities ([#4461](https://github.com/tailwindlabs/tailwindcss/pull/4461))
 - JIT: Add exhaustive pseudo-class and pseudo-element variant support ([#4482](https://github.com/tailwindlabs/tailwindcss/pull/4482))
 - JIT: Add `caret-color` utilities ([#4499](https://github.com/tailwindlabs/tailwindcss/pull/4499))
+- Rename `lightBlue` to `sky`, emit console warning when using deprecated name ([#4513](https://github.com/tailwindlabs/tailwindcss/pull/4513))
 
 ### Fixed