Bump org.apache.maven.plugin-testing:maven-plugin-testing-harness

Bumps [org.apache.maven.plugin-testing:maven-plugin-testing-harness](https://github.com/apache/maven-plugin-testing) from 4.0.0-beta-3 to 4.0.0-beta-4.
- [Release notes](https://github.com/apache/maven-plugin-testing/releases)
- [Commits](apache/maven-plugin-testing@maven-plugin-testing-4.0.0-beta-3...v4.0.0-beta-4)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugin-testing:maven-plugin-testing-harness
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -87,7 +87,7 @@ under the License.
     <asmVersion>9.7.1</asmVersion>
     <guiceVersion>6.0.0</guiceVersion>
     <mockitoVersion>5.17.0</mockitoVersion>
-    <mavenPluginTestingHarnessVersion>4.0.0-beta-3</mavenPluginTestingHarnessVersion>
+    <mavenPluginTestingHarnessVersion>4.0.0-beta-4</mavenPluginTestingHarnessVersion>
     <plexusCompilerVersion>2.15.0</plexusCompilerVersion>
     <sisuPlexusVersion>0.9.0.M2</sisuPlexusVersion>
     <version.maven-plugin-tools-3.x>3.13.1</version.maven-plugin-tools-3.x>