Bump PMD from 7.20.0 to 7.21.0

Author: adangel

ReleaseNotes.md

@@ -12,6 +12,7 @@ Eclipse Update Site:
 This is a minor release.
 
 ### 🚀 New and noteworthy
+* Update to PMD 7.21.0
 
 ### 🐛 Fixed Issues
 

pom.xml

@@ -21,12 +21,12 @@
     <!-- https://github.com/eclipse/tycho/blob/master/RELEASE_NOTES.md and https://github.com/eclipse-tycho/tycho/releases -->
     <tycho.version>5.0.2</tycho.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <pmd.version>7.20.0</pmd.version>
+    <pmd.version>7.21.0</pmd.version>
     <pmd.build-tools.version>36</pmd.build-tools.version>
     <checkstyle.version>13.0.0</checkstyle.version>
     <checkstyle.plugin.version>3.6.0</checkstyle.plugin.version>
     <pmd.plugin.version>3.28.0</pmd.plugin.version>
-    <pmd.check.version>7.20.0</pmd.check.version>
+    <pmd.check.version>7.21.0</pmd.check.version>
 
     <keystorePath>.ci/files/pmd-eclipse-plugin.p12</keystorePath>
     <keystore>${basedir}/${keystorePath}</keystore>