Add changelog

Author: hynek

CHANGELOG.md

@@ -7,6 +7,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased](https://github.com/hynek/build-and-inspect-python-package/compare/v2.11.0...main)
 
+### Changed
+
+- This release only updates the tools we use.
+  It's important for being able to handle packaging metadata 2.4, as published by recent versions of Hatchling, though.
+  [#161](https://github.com/hynek/build-and-inspect-python-package/pull/161)
+
 
 ## [2.11.0](https://github.com/hynek/build-and-inspect-python-package/compare/v2.10.0...v2.11.0)