build(deps): bump org.apache.maven.plugins:maven-pmd-plugin

Bumps [org.apache.maven.plugins:maven-pmd-plugin](https://github.com/apache/maven-pmd-plugin) from 3.21.2 to 3.22.0.
- [Release notes](https://github.com/apache/maven-pmd-plugin/releases)
- [Commits](apache/maven-pmd-plugin@maven-pmd-plugin-3.21.2...maven-pmd-plugin-3.22.0)

---
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>

modules/SilkSpawners/pom.xml

@@ -328,7 +328,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>3.21.2</version>
+        <version>3.22.0</version>
         <configuration>
           <targetJdk>1.8</targetJdk>
           <rulesets>

pom.xml

@@ -137,7 +137,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>3.21.2</version>
+        <version>3.22.0</version>
         <configuration>
           <targetJdk>1.8</targetJdk>
           <rulesets>