Retrieve spring boot version in basic project from Initializr

[AlexFalappa]

The New Basic Project wizard could try to retrieve the most recent Spring Boot RELEASE version according to the following strategies (in this order):

1. from the Spring Initializr web service (https://start.spring.io/dependencies endpoint)
2. querying the maven indices for the highest version of the dependency with groupId org.springframework.boot and artifactId spring-boot-starter
3. fallback to a hard coded version