[maven-release-plugin] prepare release maven-dependency-plugin-3.1.2

pom.xml

@@ -30,7 +30,7 @@ under the License.
   </parent>
 
   <artifactId>maven-dependency-plugin</artifactId>
-  <version>3.1.2-SNAPSHOT</version>
+  <version>3.1.2</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven Dependency Plugin</name>
@@ -44,7 +44,7 @@ under the License.
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-dependency-plugin.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-dependency-plugin.git</developerConnection>
     <url>https://github.com/apache/maven-dependency-plugin/tree/${project.scm.tag}</url>
-    <tag>HEAD</tag>
+    <tag>maven-dependency-plugin-3.1.2</tag>
   </scm>
   <issueManagement>
     <system>JIRA</system>
@@ -94,7 +94,7 @@ under the License.
     <jettyVersion>9.2.28.v20190418</jettyVersion>
     <pluginTestingVersion>2.1</pluginTestingVersion>
     <javaVersion>7</javaVersion>
-    <project.build.outputTimestamp>2020-02-02T17:38:59Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2020-03-03T18:30:23Z</project.build.outputTimestamp>
   </properties>
 
   <dependencyManagement>