[maven-release-plugin] prepare for next development iteration

Author: delabiejochen

pom.xml

@@ -49,7 +49,7 @@
     <description>This plugin integrates videos/screenshots of your TestingBot.com Selenium tests</description>
     <groupId>testingbot</groupId>
     <artifactId>testingbot</artifactId>
-    <version>1.20-SNAPSHOT</version>
+    <version>1.21-SNAPSHOT</version>
     <packaging>hpi</packaging>
     <repositories>
         <repository>