Bump version to 4.0.6 and changelog.md file changes

Author: shailesh-google

CHANGELOG.md

@@ -1,4 +1,7 @@
 # CHANGELOG
+## [4.0.6](https://github.com/apigee/apigee-client-php/milestone/43?closed=1)
+* [#477] Added Support for PHP 8.4 and PHP 8.5.
+
 ## [4.0.5](https://github.com/apigee/apigee-client-php/milestone/42?closed=1)
 * [#470] Fixed warning while creating a new team.
 

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 = '4.0.5';
+    public const VERSION = '4.0.6';
 
     /**
      * Allows access to the last request, response and exception.