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

Author: sbordet

pom.xml

@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.eclipse.jetty</groupId>
   <artifactId>jetty-reactive-httpclient</artifactId>
-  <version>1.1.19</version>
+  <version>1.1.20-SNAPSHOT</version>
   <packaging>bundle</packaging>
   <name>Jetty ReactiveStreams HttpClient</name>
   <description>Jetty ReactiveStreams HttpClient</description>