Bump org.apache.maven.plugins:maven-clean-plugin in /xmvn-parent

Bumps [org.apache.maven.plugins:maven-clean-plugin](https://github.com/apache/maven-clean-plugin) from 3.2.0 to 3.4.0.
- [Release notes](https://github.com/apache/maven-clean-plugin/releases)
- [Commits](apache/maven-clean-plugin@maven-clean-plugin-3.2.0...maven-clean-plugin-3.4.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-clean-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

xmvn-parent/pom.xml

@@ -91,7 +91,7 @@
     <buildHelperPluginVersion>3.6.0</buildHelperPluginVersion>
     <checkstyleVersion>9.3</checkstyleVersion>
     <checkstylePluginVersion>3.3.0</checkstylePluginVersion>
-    <cleanPluginVersion>3.2.0</cleanPluginVersion>
+    <cleanPluginVersion>3.4.0</cleanPluginVersion>
     <compilerPluginVersion>3.13.0</compilerPluginVersion>
     <dependencyPluginVersion>3.8.0</dependencyPluginVersion>
     <deployPluginVersion>3.1.1</deployPluginVersion>