Document pmd version bump in changes.xml (#567)

follow-up on #565

src/changes/changes.xml

@@ -72,7 +72,7 @@ The <action> type attribute can be add,update,fix,remove.
         <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.junit:junit-bom from 5.11.2 to 5.11.4 #519, #558.</action>
         <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.apache.maven.plugins:maven-artifact-plugin from 3.5.1 to 3.5.3 #522, #538.</action>
         <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.codehaus.mojo:exec-maven-plugin from 3.4.1 to 3.5.0 #523.</action>
-        <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump commons.pmd-impl.version from 7.6.0 to 7.8.0 #524, #549.</action>
+        <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump commons.pmd-impl.version from 7.6.0 to 7.9.0 #524, #549, #565.</action>
         <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump com.puppycrawl.tools:checkstyle from 10.18.2 to 10.21.1 on Java 11 and up.</action>
         <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.apache.maven.plugins:maven-javadoc-plugin from 3.10.1 to 3.11.2 #537, #555.</action>
         <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.apache.maven.plugins:maven-surefire-report-plugin from 3.5.1 to 3.5.2 #535, #541.</action>