HDDS-10356. Bump exec-maven-plugin to 3.1.1 (apache#6215)

pom.xml

@@ -274,7 +274,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
     <maven-dependency-plugin.version>3.6.1</maven-dependency-plugin.version>
     <plexus-archiver.version>4.2.2</plexus-archiver.version>
     <docker-maven-plugin.version>0.29.0</docker-maven-plugin.version>
-    <exec-maven-plugin.version>1.3.1</exec-maven-plugin.version>
+    <exec-maven-plugin.version>3.1.1</exec-maven-plugin.version>
     <license-maven-plugin.version>2.3.0</license-maven-plugin.version>
     <make-maven-plugin.version>1.0-beta-1</make-maven-plugin.version>
     <native-maven-plugin.version>1.0-alpha-11</native-maven-plugin.version>