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

pom.xml

@@ -12,7 +12,7 @@
 
     <groupId>io.openliberty.tools</groupId>
     <artifactId>liberty-ant-tasks</artifactId>
-    <version>1.9.15</version>
+    <version>1.9.16-SNAPSHOT</version>
     <name>Open Liberty and WebSphere Liberty Ant Tasks</name>
     <description>Parent pom for Ant tasks supporting development with Open Liberty and WebSphere Liberty.</description>
     <url>https://github.com/openliberty/ci.ant</url>
@@ -29,7 +29,7 @@
         <connection>scm:git:[email protected]:openliberty/ci.ant.git</connection>
         <developerConnection>scm:git:[email protected]:openliberty/ci.ant.git</developerConnection>
         <url>[email protected]:openliberty/ci.ant.git</url>
-        <tag>liberty-ant-tasks-1.9.15</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <repositories>