Update changelog

Author: thecrypticace

CHANGELOG.md

@@ -14,6 +14,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Don't transition `visibility` when using `transition` ([#18795](https://github.com/tailwindlabs/tailwindcss/pull/18795))
+- Discard matched variants with unknown named values ([#18799](https://github.com/tailwindlabs/tailwindcss/pull/18799))
+- Discard matched variants with non-string values ([#18799](https://github.com/tailwindlabs/tailwindcss/pull/18799))
 
 ## [4.1.12] - 2025-08-13