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-2 to 4.0.0-beta-3.
- [Release notes](https://github.com/apache/maven-plugin-testing/releases)
- [Commits](apache/maven-plugin-testing@maven-plugin-testing-4.0.0-beta-2...maven-plugin-testing-4.0.0-beta-3)

---
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] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -81,7 +81,7 @@
     <mavenArchiverVersion>4.0.0-beta-3</mavenArchiverVersion>
     <mavenFileManagementVersion>3.1.0</mavenFileManagementVersion>
     <mavenPluginPluginVersion>4.0.0-beta-1</mavenPluginPluginVersion>
-    <mavenPluginTestingVersion>4.0.0-beta-2</mavenPluginTestingVersion>
+    <mavenPluginTestingVersion>4.0.0-beta-3</mavenPluginTestingVersion>
     <plexusArchiverVersion>4.10.0</plexusArchiverVersion>
 
     <version.maven-plugin-tools>${mavenPluginPluginVersion}</version.maven-plugin-tools>