Bump org.codehaus.mojo:exec-maven-plugin from 3.1.1 to 3.2.0

Bumps [org.codehaus.mojo:exec-maven-plugin](https://github.com/mojohaus/exec-maven-plugin) from 3.1.1 to 3.2.0.
- [Release notes](https://github.com/mojohaus/exec-maven-plugin/releases)
- [Commits](mojohaus/exec-maven-plugin@3.1.1...3.2.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:exec-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

janusgraph-dist/pom.xml

@@ -625,7 +625,7 @@
                     <plugin>
                         <groupId>org.codehaus.mojo</groupId>
                         <artifactId>exec-maven-plugin</artifactId>
-                        <version>3.1.1</version>
+                        <version>3.2.0</version>
                         <executions>
                             <execution>
                                 <id>docker-build</id>

janusgraph-examples/pom.xml

@@ -34,7 +34,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>exec-maven-plugin</artifactId>
-                <version>3.1.1</version>
+                <version>3.2.0</version>
                 <executions>
                     <execution>
                         <goals>

pom.xml

@@ -485,7 +485,7 @@
                 <plugin>
                     <groupId>org.codehaus.mojo</groupId>
                     <artifactId>exec-maven-plugin</artifactId>
-                    <version>3.1.1</version>
+                    <version>3.2.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.codehaus.mojo</groupId>