Add CHANGELOG entry

Author: AliSoftware

CHANGELOG.md

@@ -12,8 +12,7 @@ _None_
 
 * The `ios_lint_localizations` action now also checks for duplicated keys in the `.strings` files.
   The behavior is optional via the `check_duplicate_keys` parameter and enabled by default. [#360]
-
-_None_
+* Introduce new `ios_send_app_size_metrics` and `android_send_app_size_metrics` actions. [#364]
 
 ### Bug Fixes