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

Author: github-actions[bot]

plugin/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.github.nscuro</groupId>
         <artifactId>datanucleus-postgresql-parent</artifactId>
-        <version>0.3.0</version>
+        <version>0.4.0-SNAPSHOT</version>
     </parent>
     <artifactId>datanucleus-postgresql</artifactId>
     <packaging>jar</packaging>

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>io.github.nscuro</groupId>
     <artifactId>datanucleus-postgresql-parent</artifactId>
-    <version>0.3.0</version>
+    <version>0.4.0-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>datanucleus-postgresql</name>
@@ -36,7 +36,7 @@
         <connection>${scm.connection}</connection>
         <developerConnection>${scm.connection}</developerConnection>
         <url>${scm.url}</url>
-        <tag>v0.3.0</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <issueManagement>

test/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.github.nscuro</groupId>
         <artifactId>datanucleus-postgresql-parent</artifactId>
-        <version>0.3.0</version>
+        <version>0.4.0-SNAPSHOT</version>
     </parent>
     <artifactId>datanucleus-postgresql-test</artifactId>
     <packaging>jar</packaging>