Use tycho 0.23.1

Change-Id: I10f7dead0148058788f7b3292ed709629478efd5
Signed-off-by: Fred Bricon <fbricon@gmail.com>
diff --git a/pom.xml b/pom.xml
index ce7649e..ae9018f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   <inceptionYear>2008</inceptionYear>
 
   <properties>
-    <tycho-version>0.23.0</tycho-version>
+    <tycho-version>0.23.1</tycho-version>
     <tycho-extras-version>${tycho-version}</tycho-extras-version>
     <tycho.scmUrl>scm:git:http://git.eclipse.org/gitroot/m2e-wtp/org.eclipse.m2e.wtp.git</tycho.scmUrl>