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

pom.xml

@@ -8,7 +8,7 @@
   </parent>
   <groupId>com.fasterxml.jackson.module</groupId>
   <artifactId>jackson-module-jaxb-annotations</artifactId>
-  <version>2.6.0</version>
+  <version>2.6.1-SNAPSHOT</version>
   <name>Jackson-module-JAXB-annotations</name>
   <packaging>bundle</packaging>
   <description>Support for using JAXB annotations as an alternative to "native" Jackson annotations, for configuring data binding.
@@ -18,7 +18,7 @@
     <connection>scm:git:git@github.com:FasterXML/jackson-module-jaxb-annotations.git</connection>
     <developerConnection>scm:git:git@github.com:FasterXML/jackson-module-jaxb-annotations.git</developerConnection>
     <url>http://github.com/FasterXML/jackson-module-jaxb-annotations</url>    
-    <tag>jackson-module-jaxb-annotations-2.6.0</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <properties>