Bump org.apache.maven.plugin-testing:maven-plugin-testing-harness from 3.3.0 to 3.4.0 #416

Author: garydgregory

src/changes/changes.xml

@@ -33,6 +33,7 @@
       <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump maven-scm.version from 2.1.0 to 2.2.1 #402.</action>
       <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.codehaus.plexus:plexus-velocity from 2.2.1 to 2.3.0 #407.</action>
       <action type="update" dev="ggregory" due-to="Gary Gregory">Bump commons-codec:commons-codec from 1.19.0 to 1.21.0.</action>
+      <action type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.apache.maven.plugin-testing:maven-plugin-testing-harness from 3.3.0 to 3.4.0 #416.</action>
     </release>
     <release version="1.9.1" date="2025-07-22" description="Version 1.9.1.">
       <!-- FIX -->