Bump maven-pmd-plugin from 3.19.0 to 3.20.0

Bumps [maven-pmd-plugin](https://github.com/apache/maven-pmd-plugin) from 3.19.0 to 3.20.0.
- [Release notes](https://github.com/apache/maven-pmd-plugin/releases)
- [Commits](apache/maven-pmd-plugin@maven-pmd-plugin-3.19.0...maven-pmd-plugin-3.20.0)

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

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

pom.xml

@@ -124,7 +124,7 @@
     <maven-jar-plugin.version>3.3.0</maven-jar-plugin.version>
     <maven-jxr-plugin.version>3.3.0</maven-jxr-plugin.version>
     <localizer-maven-plugin.version>1.31</localizer-maven-plugin.version>
-    <maven-pmd-plugin.version>3.19.0</maven-pmd-plugin.version>
+    <maven-pmd-plugin.version>3.20.0</maven-pmd-plugin.version>
     <maven-project-info-reports-plugin.version>3.4.1</maven-project-info-reports-plugin.version>
     <maven-reactor-plugin.version>1.1</maven-reactor-plugin.version>
     <maven-release-plugin.version>3.0.0-M7</maven-release-plugin.version>