[maven-release-plugin] prepare release maven-war-plugin-3.3.1

pom.xml

@@ -30,7 +30,7 @@
   </parent>
 
   <artifactId>maven-war-plugin</artifactId>
-  <version>3.3.1-SNAPSHOT</version>
+  <version>3.3.1</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven WAR Plugin</name>
@@ -44,7 +44,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-war-plugin.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-war-plugin.git</developerConnection>
     <url>https://github.com/apache/maven-war-plugin/tree/${project.scm.tag}</url>
-    <tag>HEAD</tag>
+    <tag>maven-war-plugin-3.3.1</tag>
   </scm>
   <issueManagement>
     <system>JIRA</system>
@@ -66,7 +66,7 @@
     <mavenFilteringVersion>3.1.1</mavenFilteringVersion>
     <mavenVersion>3.0</mavenVersion>
     <javaVersion>7</javaVersion>
-    <project.build.outputTimestamp>2020-06-06T06:50:15Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2020-07-10T06:09:12Z</project.build.outputTimestamp>
   </properties>
 
   <contributors>