Changelog update - v0.6.6 (#198)

Current pull request contains patched `CHANGELOG.md` file for the
`v0.6.6` version.

Co-authored-by: GitHub Action <[email protected]>

Author: github-actions[bot]

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+## 0.6.6 - 2025-09-24
+
 ### Changed
 
 - workspaces can no longer be removed by accident - users are now required to input the workspace name.