Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Nothing yet!
+### Fixed
+
+- Collapse whitespace in template literals with adjacent quasis ([#427](https://github.com/tailwindlabs/prettier-plugin-tailwindcss/pull/427))
 
 ## [0.7.2] - 2025-12-01