[maven-release-plugin] prepare release plexus-xml-4.0.0

pom.xml

@@ -24,15 +24,15 @@ limitations under the License.
  </parent>
 
  <artifactId>plexus-xml</artifactId>
- <version>4.0.0-SNAPSHOT</version>
+ <version>4.0.0</version>
 
  <name>Plexus XML Utilities</name>
  <description>A collection of various utility classes to ease working with XML.</description>
 
  <scm>
  <connection>scm:git:https://github.com/codehaus-plexus/plexus-xml.git</connection>
  <developerConnection>${project.scm.connection}</developerConnection>
- <tag>master</tag>
+ <tag>plexus-xml-4.0.0</tag>
  <url>https://github.com/codehaus-plexus/plexus-xml/tree/master/</url>
  </scm>
  <issueManagement>
@@ -47,7 +47,7 @@ limitations under the License.
  </distributionManagement>
 
  <properties>
- <project.build.outputTimestamp>2023-03-02T01:23:19Z</project.build.outputTimestamp>
+ <project.build.outputTimestamp>2023-05-22T15:08:22Z</project.build.outputTimestamp>
  </properties>
 
  <dependencies>