chore(llc,core,ui): update pubspec and changelogs

packages/stream_chat/CHANGELOG.md

@@ -1,3 +1,21 @@
+## 4.0.0-beta.2
+
+🐞 Fixed
+
+- Fixed reactions not working for threads in offline mode.
+- [[#1046]](https://github.com/GetStream/stream-chat-flutter/issues/1046) After `/mute` command on reload cannot access
+  any channel.
+- [[#1047]](https://github.com/GetStream/stream-chat-flutter/issues/1047) `own_capabilities` extraData missing after
+  channel update.
+- [[#1054]](https://github.com/GetStream/stream-chat-flutter/issues/1054) Fix `Unsupported operation: Cannot remove from an unmodifiable list`.
+- [[#1033]](https://github.com/GetStream/stream-chat-flutter/issues/1033) Hard delete from dashboard does not delete message from client.
+- Send only `user_id` while reconnecting.
+
+✅ Added
+
+- Handle `event.message` in `channel.truncate` events
+- Added additional parameters to `channel.truncate`
+
 ## 4.0.0-beta.0
 
 ✅ Added