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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEGUAVA-1015415
- https://snyk.io/vuln/SNYK-JAVA-JUNIT-1017047
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEANT-1015405
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHEANT-569130
- https://snyk.io/vuln/SNYK-JAVA-ORGYAML-537645

aliyun-java-sdk-chatbot/pom.xml

@@ -46,7 +46,7 @@ http://www.aliyun.com</description>
     <dependency>
         <groupId>org.testng</groupId>
         <artifactId>testng</artifactId>
-        <version>7.3.0</version>
+        <version>7.4.0</version>
     </dependency>
   </dependencies>
 	<licenses>