Pick up exec-maven-plugin version from parent POM

Author: garydgregory

pom.xml

@@ -497,7 +497,6 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>exec-maven-plugin</artifactId>
-            <version>3.4.1</version>
             <executions>
               <execution>
                 <id>benchmark</id>

src/changes/changes.xml

@@ -48,6 +48,7 @@ The <action> type attribute can be add,update,fix,remove.
   <release version="3.17.1" date="YYYY-MM-DD" description="This is a feature and maintenance release. Java 8 or later is required.">
     <!-- FIX -->
     <action                   type="fix" dev="ggregory" due-to="Gary Gregory">Fix flaky FileUtilsWaitForTest.testWaitForNegativeDuration().</action>
+    <action                   type="fix" dev="ggregory" due-to="Gary Gregory">Pick up exec-maven-plugin version from parent POM.</action>
     <!-- ADD -->
     <!-- UPDATE -->
     <action                   type="update" dev="ggregory" due-to="Gary Gregory, Dependabot">Bump org.apache.commons:commons-parent from 73 to 74 #1267.</action>