github/gs-messaging-stomp-websocket @ boot-2.7

réplica de https://github.com/spring-guides/gs-messaging-stomp-websocket.git

Jay Bryant 8aacf08c73 Upgrade Boot and Gradle versions		%!s(int64=3) %!d(string=hai) anos
..
gradle-wrapper.jar	8aacf08c73 Upgrade Boot and Gradle versions	%!s(int64=3) %!d(string=hai) anos
gradle-wrapper.properties	8aacf08c73 Upgrade Boot and Gradle versions	%!s(int64=3) %!d(string=hai) anos