Bumping pom.xml Version to 21

Signed-off-by: Martin Wygas <wygas@elan-ev.de>

Author: marwyg

pom.xml

@@ -7,7 +7,7 @@
   <parent>
     <groupId>org.opencastproject</groupId>
     <artifactId>base</artifactId>
-    <version>20-SNAPSHOT</version>
+    <version>21-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
   <properties>