update version id

Author: justinlguo

CHANGELOG.md

@@ -1,5 +1,14 @@
 cos-php-sdk-v5 Upgrade Guide
 ====================
+2.6.11 to 2.6.12
+---------
+1. 盲水印支持版本参数
+2. 更新sts-sdk demo
+3. 压缩包预览
+4. hls加密
+5. 视频明水印
+6. 图片水印支持spacing参数
+
 2.6.10 to 2.6.11
 ---------
 1. 创建数据集

src/Client.php

@@ -280,7 +280,7 @@
  * @see \Qcloud\Cos\Service::getService()
  */
 class Client extends GuzzleClient {
-    const VERSION = '2.6.11';
+    const VERSION = '2.6.12';
 
     public $httpClient;