Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix trailing `)` from interfering with extraction in Clojure keywords ([#18345](https://github.com/tailwindlabs/tailwindcss/pull/18345))
 - Detect classes inside Elixir charlist, word list, and string sigils ([#18432](https://github.com/tailwindlabs/tailwindcss/pull/18432))
 - Track source locations through `@plugin` and `@config` ([#18345](https://github.com/tailwindlabs/tailwindcss/pull/18345))
+- Add option to disable url rewriting in `@tailwindcss/postcss` ([#18321](https://github.com/tailwindlabs/tailwindcss/pull/18321))
 
 ## [4.1.11] - 2025-06-26