[MPOM-121] Upgrade Maven PMD Plugin to 3.6

git-svn-id: https://svn.apache.org/repos/asf/maven/pom/trunk@1743572 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/maven/pom.xml b/maven/pom.xml
index e8ba3fe..64caf72 100644
--- a/maven/pom.xml
+++ b/maven/pom.xml
@@ -947,7 +947,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-pmd-plugin</artifactId>
-          <version>3.5</version>
+          <version>3.6</version>
           <configuration>
             <targetJdk>${maven.compiler.target}</targetJdk>
             <rulesets>