Upgrade maven-enforcer-plugin to be compatible with OpenJDK 13

Author: tashoyan

pom.xml

@@ -31,7 +31,7 @@
         <compiler.scala.compat.version>2.12</compiler.scala.compat.version>
 
         <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
-        <maven-enforcer-plugin.version>1.4.1</maven-enforcer-plugin.version>
+        <maven-enforcer-plugin.version>3.0.0-M2</maven-enforcer-plugin.version>
         <maven-clean-plugin.version>3.1.0</maven-clean-plugin.version>
         <maven-resources-plugin.version>3.1.0</maven-resources-plugin.version>
         <maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>