Update to tycho 2.7.0

Change-Id: I1a91f113d315c00e41e112076c92814084f38211
diff --git a/releng/org.eclipse.sphinx.releng.builds/parent/pom.xml b/releng/org.eclipse.sphinx.releng.builds/parent/pom.xml
index 2ebea83..9b77be1 100644
--- a/releng/org.eclipse.sphinx.releng.builds/parent/pom.xml
+++ b/releng/org.eclipse.sphinx.releng.builds/parent/pom.xml
@@ -39,7 +39,7 @@
 		<system>Eclipse Jenkins</system>

 	</ciManagement>

 	<properties>

-		<tycho.version>2.5.0</tycho.version>

+		<tycho.version>2.7.0</tycho.version>

 		<xtend.maven.plugin.version>2.17.0</xtend.maven.plugin.version>

 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

 		<project.build.resourceEncoding>UTF-8</project.build.resourceEncoding>