…guration.imports file to enable auto-configuration during upgrade to spring boot 2.7.x

In spring boot 2.7.x, major change has been introduced for auto-configuration registration. The registration has been moved from spring.factories under the org.springframework.boot.autoconfigure.EnableAutoConfiguration key to a new file named META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports.

https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-2.7-Release-Notes#changes-to-auto-configuration

So, replacing the registration of auto-configuration classes from spring.factories to META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports.