chore(deps): bump pmd.version from 7.19.0 to 7.20.0 in /ddk-parent

Bumps `pmd.version` from 7.19.0 to 7.20.0.

Updates `net.sourceforge.pmd:pmd-core` from 7.19.0 to 7.20.0
- [Release notes](https://github.com/pmd/pmd/releases)
- [Commits](pmd/pmd@pmd_releases/7.19.0...pmd_releases/7.20.0)

Updates `net.sourceforge.pmd:pmd-java` from 7.19.0 to 7.20.0
- [Release notes](https://github.com/pmd/pmd/releases)
- [Commits](pmd/pmd@pmd_releases/7.19.0...pmd_releases/7.20.0)

---
updated-dependencies:
- dependency-name: net.sourceforge.pmd:pmd-core
  dependency-version: 7.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: net.sourceforge.pmd:pmd-java
  dependency-version: 7.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

ddk-parent/pom.xml

@@ -53,7 +53,7 @@
     <spotbugs.plugin.version>4.9.8.2</spotbugs.plugin.version>
     <spotbugs.version>4.9.8</spotbugs.version>
     <pmd.plugin.version>3.28.0</pmd.plugin.version>
-    <pmd.version>7.19.0</pmd.version>
+    <pmd.version>7.20.0</pmd.version>
     <tycho.version>5.0.1</tycho.version>
     <xtend.version>2.41.0</xtend.version>
   </properties>