chore: release 1.6.2 (#214)

Prepare releasing **1.6.2**

After this pull request is merged, the following steps below will be
going on:

* Create tag for **1.6.2**
* Publish to pub.dev
* Create Github release for **1.6.2**

*This pull request is opened by bot*

Co-authored-by: ZGaopeng <ZGaopeng@users.noreply.github.com>

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [1.6.2](https://github.com/AgoraIO-Extensions/Agora-Flutter-RTM-SDK/compare/v1.5.9...v1.6.2) (2025-07-22)
+
+### Features
+* previous 1.6.1 was published incorrectly
+* Add AGP namespace support([56d8f21](https://github.com/AgoraIO-Extensions/Agora-Flutter-RTM-SDK/pull/196/files))
+
 ## [1.6.1](https://github.com/AgoraIO-Extensions/Agora-Flutter-RTM-SDK/compare/v1.5.9...v1.6.1) (2025-07-22)
 
 ### Features

pubspec.yaml

@@ -2,7 +2,7 @@ name: agora_rtm
 description: >-
       Flutter wrapper around the Agora Real Time Message SDKs for Android and
       iOS.
-version: 1.6.1
+version: 1.6.2
 homepage: https://www.agora.io
 repository: https://github.com/AgoraIO/Flutter-RTM
 environment: