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

pom.xml

@@ -5,7 +5,7 @@
   <groupId>ch.dlcm</groupId>
   <artifactId>dlcm-portal</artifactId>
   <packaging>pom</packaging>
-  <version>1.6.0</version>
+  <version>1.7.0-SNAPSHOT</version>
 
   <properties>
     <!-- Base web context used for the Angular application -->
@@ -18,7 +18,7 @@
 
   <scm>
     <connection>scm:git:git@gitlab.unige.ch:dlcm/ui/dlcm-portal.git</connection>
-    <tag>dlcm-1.6.0</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <distributionManagement>