build(deps): update dependency org.codehaus.mojo:exec-maven-plugin to v1.6.0 (#321)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.codehaus.mojo:exec-maven-plugin](http://www.mojohaus.org/exec-maven-plugin) ([source](https://togithub.com/mojohaus/exec-maven-plugin)) | `1.2.1` -> `1.6.0` | [![age](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:exec-maven-plugin/1.6.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:exec-maven-plugin/1.6.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:exec-maven-plugin/1.6.0/compatibility-slim/1.2.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:exec-maven-plugin/1.6.0/confidence-slim/1.2.1)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate-bot

retail/interactive-tutorials/pom.xml

@@ -59,7 +59,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>exec-maven-plugin</artifactId>
-        <version>1.2.1</version>
+        <version>1.6.0</version>
         <configuration>
           <cleanupDaemonThreads>false</cleanupDaemonThreads>
         </configuration>