[maven-release-plugin] prepare release plexus-io-3.3.1

pom.xml

@@ -8,15 +8,15 @@
   </parent>
 
   <artifactId>plexus-io</artifactId>
-  <version>3.3.1-SNAPSHOT</version>
+  <version>3.3.1</version>
 
   <name>Plexus IO Components</name>
 
   <scm>
     <connection>scm:git:git@github.com:codehaus-plexus/plexus-io.git</connection>
     <developerConnection>scm:git:git@github.com:codehaus-plexus/plexus-io.git</developerConnection>
     <url>http://github.com/codehaus-plexus/plexus-io</url>
-    <tag>HEAD</tag>
+    <tag>plexus-io-3.3.1</tag>
   </scm>
   <issueManagement>
     <system>jira</system>
@@ -32,7 +32,7 @@
   <properties>
     <cobertura.skip>true</cobertura.skip>
     <javaVersion>8</javaVersion>
-    <project.build.outputTimestamp>2022-03-27T07:33:23Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2022-05-02T06:08:27Z</project.build.outputTimestamp>
   </properties>
 
   <dependencies>