Plugin version update

Author: HardNorth

example-spock/pom.xml

@@ -57,7 +57,7 @@
                 visit https://github.com/groovy/GMavenPlus/wiki -->
                 <groupId>org.codehaus.gmavenplus</groupId>
                 <artifactId>gmavenplus-plugin</artifactId>
-                <version>1.12.0</version>
+                <version>2.1.0</version>
                 <executions>
                     <execution>
                         <goals>