[maven-release-plugin] prepare release groovy-1.13
[maven-release-plugin] prepare release groovy-1.13

jenkinsci/groovy-plugin,ndeloof/groovy-plugin,daniel-beck/groovy-plugin,vjuranek/groovy-plugin,vjuranek/groovy-plugin,jenkinsci/groovy-plugin,daniel-beck/groovy-plugin,daniel-beck/groovy-plugin,jenkinsci/groovy-plugin