update changelog

Author: sliu008

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update to python 3.12
 - Update github actions to use launchpad token lambda
 - Update sphinx documentation
+- [issue #154](https://github.com/podaac/concise/issues/154): Fix construct history json from none, as we are identifying empty files wrong.
+- [issue #156](https://github.com/podaac/concise/issues/156): Error in calculating dimensions, fix via collapse function if the dimension inheritance for dims aren't consistent in the files.
 ### Deprecated
 ### Removed
 ### Fixed