docs: add changelog entry for #1248

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: msukkari

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added ask connectors: connect 3rd party MCP servers to your ask agent. [#1106](https://github.com/sourcebot-dev/sourcebot/pull/1106)
 - Added progress bar when navigating between pages. [#1106](https://github.com/sourcebot-dev/sourcebot/pull/1106)
 - Added a integrated changelog into the sidebar. [#1106](https://github.com/sourcebot-dev/sourcebot/pull/1106)
+- [EE] Added `modelProvider` and `model` properties to the `ask_message_sent` analytics event. [#1248](https://github.com/sourcebot-dev/sourcebot/pull/1248)
 
 ### Changed
 - [**Breaking Change**] Changed the default role assignment to `Owner` for organizations on the free tier. [#1106](https://github.com/sourcebot-dev/sourcebot/pull/1106)