chore: update changelog

Author: brianheineman

CHANGELOG.md

@@ -10,7 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.8.9](https://github.com/theseus-rs/file-type/compare/v0.8.8...v0.8.9) - 2025-08-18
 
 ### Other
-- Merge pull request #145 from theseus-rs/update-definitions
+- update file formats
 - remove devcontainer
 - correct lint errors