Bump client version to 3.0.8 and changelog update (#388)

Author: kedarkhaire

CHANGELOG.md

@@ -1,4 +1,7 @@
 # CHANGELOG
+## [3.0.8](https://github.com/apigee/apigee-client-php/milestone/32?closed=1)
+* [#379] Update option-resolver's symfony component version to its latest.
+
 ## [3.0.7](https://github.com/apigee/apigee-client-php/milestone/31?closed=1)
 * [#374] Bump minimum required version of symfony/serializer.
 * [#376] Remove symfony/serializer conflict and bump version.

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 = '3.0.7';
+    public const VERSION = '3.0.8';
 
     /**
      * Allows access to the last request, response and exception.