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

Author: liuweiGL

pom.xml

@@ -10,7 +10,7 @@
   </parent>
   <groupId>io.jenkins.plugins</groupId>
   <artifactId>dingding-notifications</artifactId>
-  <version>2.6.1</version>
+  <version>2.6.2-SNAPSHOT</version>
   <packaging>hpi</packaging>
   <properties>
     <jenkins.version>2.361.4</jenkins.version>