First support Spring Framework 6 / Spring Batch 5

[kazuki43zoo]

• https://spring.io/blog/2021/12/16/spring-framework-6-0-m1-released
• https://github.com/spring-projects/spring-framework/wiki/Upgrading-to-Spring-Framework-6.x
• https://github.com/spring-projects/spring-batch/wiki/Spring-Batch-5.0-Migration-Guide

Tasks

• Add the new GitHub workflow for checking compatibility

Deliverables

• https://github.com/mybatis/spring/actions/workflows/compatibility-check-spring6.yaml