fix(boba-tea-shop): resolve a dependency-related issue (#409)

## AgentScope-Java Version

1.0.5

## Description

fix(boba-tea-shop): resolve a dependency-related issue

## Checklist

Please check the following items before code is ready to be reviewed.

- [x]  Code has been formatted with `mvn spotless:apply`
- [x]  All tests are passing (`mvn test`)
- [x]  Javadoc comments are complete and follow project conventions
- [x] Related documentation has been updated (e.g. links, examples,
etc.)
- [x]  Code is ready for review

Author: LearningGp

agentscope-examples/boba-tea-shop/pom.xml

@@ -66,6 +66,12 @@
                 <groupId>io.agentscope</groupId>
                 <artifactId>agentscope-extensions-a2a-nacos</artifactId>
                 <version>1.0.3</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>io.agentscope</groupId>
+                        <artifactId>agentscope-extensions-a2a-server</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
             <dependency>
                 <groupId>io.agentscope</groupId>