Bump com.puppycrawl.tools:checkstyle from 13.2.0 to 13.4.0 on Java 21

and up

Author: garydgregory

pom.xml

@@ -1789,7 +1789,7 @@
         <jdk>[21,)</jdk>
 	  </activation>
       <properties>
-        <commons.checkstyle.version>13.3.0</commons.checkstyle.version>
+        <commons.checkstyle.version>13.4.0</commons.checkstyle.version>
         <argLine>-XX:+EnableDynamicAgentLoading</argLine>
       </properties>
     </profile>

src/changes/changes.xml

@@ -66,6 +66,7 @@ The <action> type attribute can be add,update,fix,remove.
         <action type="update" dev="ggregory" due-to="Gary Gregory">Bump com.puppycrawl.tools:checkstyle from 12.3.1 to 13.3.0 on Java 21 and up.</action>
         <action type="update" dev="ggregory" due-to="Gary Gregory">Bump biz.aQute.bnd:biz.aQute.bndlib from 7.2.1 to 7.2.3 on Java 17 and up.</action>        
         <action type="update" dev="ggregory" due-to="Gary Gregory">Bump com.github.spotbugs:spotbugs-maven-plugin from 4.9.8.2 to 4.9.8.3.</action>
+        <action type="update" dev="ggregory" due-to="Gary Gregory">Bump com.puppycrawl.tools:checkstyle from 13.2.0 to 13.4.0 on Java 21 and up.</action>
 	  </release>
       <release version="97" date="2026-02-21" description="This is a feature and maintenance release. Java 8 or later is required.">
         <!-- FIX -->