[pom] Update groovy to 2.4.12
[pom] Update groovy to 2.4.12

lqc/spotbugs-maven-plugin,hazendaz/spotbugs-maven-plugin,hazendaz/spotbugs-maven-plugin,hazendaz/findbugs-maven-plugin,gleclaire/findbugs-maven-plugin,lqc/spotbugs-maven-plugin,lqc/spotbugs-maven-plugin,hazendaz/findbugs-maven-plugin,gleclaire/findbugs-maven-plugin,gleclaire/findbugs-maven-plugin,hazendaz/findbugs-maven-plugin,hazendaz/spotbugs-maven-plugin