update parent dependencies

Author: ipa-nhg

plugins/de.fraunhofer.ipa.ros.parent/pom.xml

@@ -8,12 +8,11 @@
 	<packaging>pom</packaging>
 
 	<properties>
-		<xtextVersion>2.16.0</xtextVersion>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
-		<!-- Tycho settings -->
-		<tycho-version>1.5.1</tycho-version>
+		<tycho-version>1.6.0</tycho-version>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<xtextVersion>2.25.0</xtextVersion>
 		<tycho.disableP2Mirrors>true</tycho.disableP2Mirrors>
 	</properties>
 	<modules>