Add file variant to changelog

Co-Authored-By: Adam Wathan <4323180+adamwathan@users.noreply.github.com>

Author: reinink

CHANGELOG.md

@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add `border-hidden` utility ([#5485](https://github.com/tailwindlabs/tailwindcss/pull/5485))
 - Add `align-sub` and `align-super` utilities by default ([#5486](https://github.com/tailwindlabs/tailwindcss/pull/5486))
 - Add `break-before`, `break-inside` and `break-after` utilities ([#5530](https://github.com/tailwindlabs/tailwindcss/pull/5530))
+= Add `file` variant for `::file-selector-button` pseudo element ([#4936](https://github.com/tailwindlabs/tailwindcss/pull/4936))
 
 ### Fixed