chore: 跟新腾讯云存储SDK版本

pom.xml

@@ -115,7 +115,7 @@
             <dependency>
                 <groupId>com.qcloud</groupId>
                 <artifactId>cos_api</artifactId>
-                <version>5.4.4</version>
+                <version>5.6.8</version>
             </dependency>
 
             <dependency>