Bump tycho version.

Author: khatchad

pom.xml

@@ -55,7 +55,7 @@
     </profile>
   </profiles>
   <properties>
-    <tycho-version>1.4.0</tycho-version>
+    <tycho-version>1.6.0</tycho-version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <jacoco-version>0.7.8</jacoco-version>
   </properties>