Pick up exec-maven-plugin version from parent POM

Author: garydgregory

commons-numbers-examples/examples-jmh/pom.xml

@@ -107,8 +107,6 @@
     <!-- Reproducible builds -->
     <project.build.outputTimestamp>${numbers.build.outputTimestamp}</project.build.outputTimestamp>
 
-    <exec-maven-plugin.version>3.5.0</exec-maven-plugin.version>
-
     <!-- JMH Benchmark related properties: version, name of the benchmarking uber jar. -->
     <jmh.version>1.37</jmh.version>
     <uberjar.name>examples-jmh</uberjar.name>
@@ -209,7 +207,6 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>exec-maven-plugin</artifactId>
-            <version>${exec-maven-plugin.version}</version>
             <executions>
               <execution>
                 <id>benchmark</id>

src/changes/changes.xml

@@ -60,6 +60,7 @@ New features, updates and bug fixes.
         Bug in "compareTo" method of classes "Fraction" and "BigFraction" (when the two
         values are negative).
       </action>
+	  <action dev="ggregory" type="update">Pick up exec-maven-plugin version from parent POM.</action>
     </release>
 
     <release version="1.2" date="2024-08-12" description="