Bump version to 4.0.2 and changelog (#448)

Author: divya-intelli

CHANGELOG.md

@@ -1,4 +1,6 @@
 # CHANGELOG
+## [4.0.2](https://github.com/apigee/apigee-client-php/milestone/36?closed=1)
+* [#447] Support to update AppGroup app credential scope object.
 
 ## [4.0.1](https://github.com/apigee/apigee-client-php/milestone/35?closed=1)
 * [#423] Support for drz endpoint.

src/ClientInterface.php

@@ -63,7 +63,7 @@ interface ClientInterface extends HttpClient
      */
     public const APIGEE_ON_GCP_ENDPOINT = 'https://apigee.googleapis.com/v1';
 
-    public const VERSION = '4.0.1';
+    public const VERSION = '4.0.2';
 
     /**
      * Allows access to the last request, response and exception.