Update README.md

Author: 563750789

README.md

@@ -8,7 +8,7 @@
 <dependency>
     <groupId>com.qcloud</groupId>
     <artifactId>cos_api</artifactId>
-    <version>5.6.213</version>
+    <version>5.6.227</version>
 </dependency>
 ```