Update Tycho to 1.7.0 only because version 2.0.0 requires Java 11
diff --git a/maven_plugin_version-master/pom.xml b/maven_plugin_version-master/pom.xml
index 7dd3a9f..4f30367 100644
--- a/maven_plugin_version-master/pom.xml
+++ b/maven_plugin_version-master/pom.xml
@@ -1,14 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  Copyright (c) 2015 BSI Business Systems Integration AG.
-  All rights reserved. This program and the accompanying materials
-  are made available under the terms of the Eclipse Public License v1.0
-  which accompanies this distribution, and is available at
-  http://www.eclipse.org/legal/epl-v10.html
-
-  Contributors:
-  BSI Business Systems Integration AG - initial API and implementation
--->
+  ~ Copyright (c) BSI Business Systems Integration AG. All rights reserved.
+  ~ http://www.bsiag.com/
+  -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
@@ -172,7 +166,8 @@
 
     <!-- https://www.eclipse.org/tycho/sitedocs/index.html -->
     <!-- version of Tycho used by org.eclipse.scout.sdk.core.releng build and profiles eclipse-sign and eclipse-pack -->
-    <master_plugin_tycho_version>2.0.0</master_plugin_tycho_version>
+    <!-- Tycho >= 2.0.0 requires at least Java 11 and Maven 3.6.3 -->
+    <master_plugin_tycho_version>1.7.0</master_plugin_tycho_version>
 
     <!-- https://www.eclipse.org/tycho/ -->
     <master_dependency_tycho-compiler_version>${master_plugin_tycho_version}</master_dependency_tycho-compiler_version>