use last invoker plugin version

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1380326 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 659ab2b..5598b58 100644
--- a/pom.xml
+++ b/pom.xml
@@ -165,7 +165,7 @@
             <plugin>
               <groupId>org.apache.maven.plugins</groupId>
               <artifactId>maven-invoker-plugin</artifactId>
-              <version>1.6</version>
+              <version>1.7</version>
               <configuration>
                 <debug>true</debug>
                 <projectsDirectory>src/it</projectsDirectory>