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

pom.xml

@@ -8,7 +8,7 @@
   </parent>
 
   <artifactId>extra-enforcer-rules</artifactId>
-  <version>1.5</version>
+  <version>1.6-SNAPSHOT</version>
 
   <name>Extra Enforcer Rules</name>
 
@@ -35,7 +35,7 @@
     <connection>scm:git:https://github.com/mojohaus/extra-enforcer-rules.git</connection>
     <developerConnection>scm:git:ssh://[email protected]/mojohaus/extra-enforcer-rules.git</developerConnection>
     <url>https://github.com/mojohaus/extra-enforcer-rules</url>
-    <tag>extra-enforcer-rules-1.5</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <ciManagement>
@@ -95,7 +95,7 @@
     <maven.version>3.1.1</maven.version>
     <mojo.java.target>1.8</mojo.java.target>
     <scmpublish.content>target/staging/${project.artifactId}</scmpublish.content>
-    <project.build.outputTimestamp>2021-12-15T16:36:21Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2021-12-15T16:39:59Z</project.build.outputTimestamp>
   </properties>
 
   <dependencyManagement>