CHANGELOG: note fix for execute bit

Author: ydnar

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- Files generated by `wit-bindgen-go generate` no longer have the execute bit set.
+
 ## [v0.6.1] — 2025-03-16
 
 ### Changed