Merge pull request #43 from sendbird/feature/elliot/update-changelog

Updated CHANGELOG.md

Author: elliot-choic

CHANGELOG.md

@@ -12,7 +12,8 @@
     * Note: You need to set your custom EmojiCategory using [Sendbird Platform API](https://sendbird.com/docs/chat/platform-api/v3/message/reactions-and-emojis/reactions-and-emojis-overview) in advance.
 * Fixed a crash in the new version due to new fields not having default value.
 
-### v3.20.0 (Aug 29, 2024) with Chat SDK `v4.18.0`
+### <strike>v3.20.0 (Aug 29, 2024) with Chat SDK `v4.18.0`</strike> *DEPRECATED*
+* **Deprecated as this version would cause `MissingFieldException` from `NotificationTemplate` due to adding a new field without a default value.**
 * Added support for EmojiCategory. You can now filter emojis for different messages when adding Reactions to a message.
     * New Interfaces
        ```kotlin