Bump org.codehaus.plexus:plexus-xml from 3.0.0 to 4.0.0

Bumps [org.codehaus.plexus:plexus-xml](https://github.com/codehaus-plexus/plexus-xml) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/codehaus-plexus/plexus-xml/releases)
- [Commits](codehaus-plexus/plexus-xml@plexus-xml-3.0.0...plexus-xml-4.0.0)

---
updated-dependencies:
- dependency-name: org.codehaus.plexus:plexus-xml
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -95,7 +95,7 @@ under the License.
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-xml</artifactId>
-      <version>3.0.0</version>
+      <version>4.0.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>