Changelog entry for scratch & ltrace

Author: mpeteuil

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Added
+
+ - `ltrace` for debugging
+
+### Changed
+
+ - Use `scratch` base instead of `alpine` for smaller lambda extension images.
+
 ## [0.94.0] - 2022-10-03
 
 Schedule release. No changes.