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

This reverts commit 455e1d7f2f8f40bfb3e01b9728a620830104c44b.

Signing issue.
diff --git a/pom.xml b/pom.xml
index 24a23b1..d5fa4d4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
   </parent>
 
   <artifactId>maven-ear-plugin</artifactId>
-  <version>3.0.3-SNAPSHOT</version>
+  <version>3.0.2</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven EAR Plugin</name>
@@ -44,7 +44,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-ear-plugin.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-ear-plugin.git</developerConnection>
     <url>https://github.com/apache/maven-ear-plugin/tree/${project.scm.tag}</url>
-    <tag>HEAD</tag>
+    <tag>maven-ear-plugin-3.0.2</tag>
   </scm>
   <issueManagement>
     <system>JIRA</system>