Fix the dependency missing of dubbo-spring-boot.(#14947)

[lanxi0]

Fix the dependency missing of dubbo-spring-boot.(#14947)

What is the purpose of the change?

ServiceServiceIdConflictProcessor imported ServiceConfig and other classes, But it doesn't rely on dubbo-config-spring.and when running dubbo-demo-spring-boot, An error indicating that the Class not found.
Fixed the issue of missing dependencies

Checklist

• Make sure there is a GitHub_issue field for the change.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction. If the new feature or significant change is committed, please remember to add sample in dubbo samples project.
• Make sure gitHub actions can pass. Why the workflow is failing and how to fix it?