chore(stackable-versioned): update changelog

Author: NickLarsenNZ

crates/stackable-versioned/CHANGELOG.md

@@ -4,12 +4,18 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Added
+
+- Pass through container and item attributes (including doc-comments). Add
+  attribute for version specific docs. ([#847])
+
 ### Fixed
 
 - Report variant rename validation error at the correct span and trim underscores
   from variants not using PascalCase (#[842]).
 
 [#842]: https://github.com/stackabletech/operator-rs/pull/842
+[#847]: https://github.com/stackabletech/operator-rs/pull/847
 
 ## [0.1.1] - 2024-07-10