Upgrade tycho to 0.23.1

Author: adangel

pom.xml

@@ -14,7 +14,7 @@
   </modules>
 
   <properties>
-    <tycho.version>0.22.0</tycho.version>
+    <tycho.version>0.23.1</tycho.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <pmd.version>5.3.4</pmd.version>
   </properties>