Update Tycho dependency to 1.4.0 (required for 2019-03)
diff --git a/development/org.eclipse.libra.releng/pom.xml b/development/org.eclipse.libra.releng/pom.xml
index 5eafb28..123b45d 100644
--- a/development/org.eclipse.libra.releng/pom.xml
+++ b/development/org.eclipse.libra.releng/pom.xml
@@ -9,7 +9,7 @@
 	<name>Libra Parent POM</name>
 
 	<properties>
-		<tycho-version>0.26.0</tycho-version>
+		<tycho-version>1.4.0</tycho-version>
 		<eclipse-site>http://download.eclipse.org/releases/2019-03/201903201000/</eclipse-site>
 		<emf-site>http://download.eclipse.org/releases/2019-03/201903201000/</emf-site>
 		<dtp-site>http://download.eclipse.org/releases/2019-03/201903201000/</dtp-site>