build(deps): update dependency org.codehaus.mojo:exec-maven-plugin to v3 (#144)

Author: renovate-bot

pom.xml

@@ -117,7 +117,7 @@
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>exec-maven-plugin</artifactId>
-          <version>1.6.0</version>
+          <version>3.0.0</version>
           <configuration>
             <!-- to get rid of the warning: [WARNING] Warning: killAfter is now deprecated. Do you need it ?
                  Please comment on MEXEC-6. see: method execute() in