fix: aliyun-java-sdk-chatbot/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMMONSCODEC-561518

Author: snyk-bot

aliyun-java-sdk-chatbot/pom.xml

@@ -31,7 +31,7 @@ http://www.aliyun.com</description>
   		<groupId>com.aliyun</groupId>
   		<artifactId>aliyun-java-sdk-core</artifactId>
 		<optional>true</optional>
-  		<version>4.5.14</version>
+  		<version>4.7.5</version>
   	</dependency>
 	<dependency>
 		<groupId>com.google.code.gson</groupId>