[maven-release-plugin] prepare release maven-javadoc-plugin-3.3.0

pom.xml

@@ -30,7 +30,7 @@ under the License.
   </parent>
 
   <artifactId>maven-javadoc-plugin</artifactId>
-  <version>3.3.0-SNAPSHOT</version>
+  <version>3.3.0</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven Javadoc Plugin</name>
@@ -48,7 +48,7 @@ under the License.
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-javadoc-plugin.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-javadoc-plugin.git</developerConnection>
     <url>https://github.com/apache/maven-javadoc-plugin/tree/${project.scm.tag}</url>
-    <tag>HEAD</tag>
+    <tag>maven-javadoc-plugin-3.3.0</tag>
   </scm>
   <issueManagement>
     <system>jira</system>
@@ -76,7 +76,7 @@ under the License.
     <!-- for ITs -->
     <sitePluginVersion>3.3</sitePluginVersion>
     <projectInfoReportsPluginVersion>2.7</projectInfoReportsPluginVersion>
-    <project.build.outputTimestamp>2020-03-12T06:39:23Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2021-05-18T17:41:28Z</project.build.outputTimestamp>
   </properties>
 
   <contributors>
@@ -482,7 +482,7 @@ under the License.
                 <pomExclude>MJAVADOC-181/pom.xml</pomExclude> <!-- seems to be wrong, see comment in Jira issue  -->
                 <pomExclude>output-encoding/pom.xml</pomExclude>
               </pomExcludes>
-              <properties combine.self="override"/>
+              <properties combine.self="override" />
               <filterProperties>
                 <maven.compiler.source>${maven.compiler.source}</maven.compiler.source>
                 <maven.compiler.target>${maven.compiler.target}</maven.compiler.target>