update readme

Author: AustinBenoit

release_build_files/readme.md

@@ -613,13 +613,16 @@ workflow use only during the development of your app, not for publicly shipping
 code.
 
 ## Release Notes
+### Upcoming
+- Changes 
+    - Analytics: Add in `LogAppleTransaction` for logging Storekit 2 transactions on iOS.
+
 ### 13.6.0
 - Changes
     - General (Android): Update to Firebase Android BoM version 34.12.0.
     - General (iOS): Update to Firebase Cocoapods version 12.12.0.
     - Functions (general): Add in support for Limited Use Tokens.
     - Storage: Added `List` API for all platforms, which gets the list of items under a `StorageReference`
-    - Analytics: Add in `LogAppleTransaction` for logging Storekit 2 transactions on iOS.
 
 ### 13.5.0
 -   Changes