Fix parent pom version
Fix parent pom version

Closes gh-509

bclozel/initializr,spring-io/initializr,snicoll/initializr,snicoll/initializr,bclozel/initializr,snicoll/initializr,spring-io/initializr,bclozel/initializr,spring-io/initializr,bclozel/initializr,bclozel/initializr