chore: update CHANGELOG.md

Author: xsahil03x

packages/stream_chat_flutter/CHANGELOG.md

@@ -1,9 +1,14 @@
 ## Upcoming
 
+✅ Added
+
+- Added several new widgets to enhance the AI assistant features.
+  - `StreamingMessageView` to show AI assistant messages with streaming animation.
+  - `AITypingIndicatorView` to show AI typing indicator.
+
 🐞 Fixed
 
-- [[#2030]](https://github.com/GetStream/stream-chat-flutter/issues/2030) Fixed `video_thumbnail`
-  Namespace not specified.
+- [[#2030]](https://github.com/GetStream/stream-chat-flutter/issues/2030) Fixed `video_thumbnail` Namespace not specified.
 
 ## 8.2.0