Use pmd 5.3.0

Author: adangel

pom.xml

@@ -16,7 +16,7 @@
   <properties>
     <tycho.version>0.22.0</tycho.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <pmd.version>5.3.0-SNAPSHOT</pmd.version>
+    <pmd.version>5.3.0</pmd.version>
   </properties>
 
   <repositories>