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

pom.xml

@@ -8,7 +8,7 @@
   </parent>
   <groupId>com.fasterxml.jackson.datatype</groupId>
   <artifactId>jackson-datatype-jsr310</artifactId>
-  <version>2.7.3</version>
+  <version>2.7.4-SNAPSHOT</version>
   <name>Jackson-Datatype-JSR310</name>
   <packaging>bundle</packaging>
   <description>Add-on module to support JSR-310 (Java 8 Date &amp; Time API) data types.</description>
@@ -25,7 +25,7 @@
     <connection>scm:git:[email protected]:FasterXML/jackson-datatype-jsr310.git</connection>
     <developerConnection>scm:git:[email protected]:FasterXML/jackson-datatype-jsr310.git</developerConnection>
     <url>http://github.com/FasterXML/jackson-datatype-jsr310</url>    
-    <tag>jackson-datatype-jsr310-2.7.3</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <properties>