SpringBoot Update tutorial, since run command from Spring v3.0 was removed

Spring version: v3.0.5

Since Spring Boot 3.0 the run command was removed (see https://github.com/spring-projects/spring-boot/issues/33482#issuecomment-1349992508). This tutorial should be updated as well, otherwise a beginner would have problems running the app.groovy file.

Comment From: scottfrederick

@TryKatChup Thanks for letting us know. The tutorial page you linked to has a Go To Repo link at the top which will take you to a GitHub repo with its own issue tracker. Can you file this issue in that project instead?

Comment From: izeye

I created https://github.com/spring-guides/gs-spring-boot/pull/155 to try to resolve it.

Comment From: wilkinsona

Thanks very much, @izeye.