Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Don't output unparsable values ([#6469](https://github.com/tailwindlabs/tailwindcss/pull/6469))
 - Fix text decoration utilities from overriding the new text decoration color/style/thickness utilities when used with a modifier ([#6378](https://github.com/tailwindlabs/tailwindcss/pull/6378))
+- Move defaults to their own always-on layer ([#6500](https://github.com/tailwindlabs/tailwindcss/pull/6500))
 
 ## [3.0.2] - 2021-12-13