chore: update CHANGELOG for #924

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: brendan-kellam

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 - Added PostHog events for chat UI interactions (details card expand/collapse, copy answer, table of contents toggle) and repo tracking in `wa_chat_message_sent`. [#922](https://github.com/sourcebot-dev/sourcebot/pull/922)
+- Added Bitbucket Cloud OAuth identity provider support (`provider: "bitbucket-cloud"`) for SSO and account-linked permission syncing. [#924](https://github.com/sourcebot-dev/sourcebot/pull/924)
 
 ## [4.11.7] - 2026-02-23