Bump exec-maven-plugin from 1.6.0 to 3.0.0

Bumps [exec-maven-plugin](https://github.com/mojohaus/exec-maven-plugin) from 1.6.0 to 3.0.0.
- [Release notes](https://github.com/mojohaus/exec-maven-plugin/releases)
- [Commits](mojohaus/exec-maven-plugin@exec-maven-plugin-1.6.0...exec-maven-plugin-3.0.0)

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

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

rxjava2-jdbc/pom.xml

@@ -388,7 +388,7 @@
                     <plugin>
                         <groupId>org.codehaus.mojo</groupId>
                         <artifactId>exec-maven-plugin</artifactId>
-                        <version>1.6.0</version>
+                        <version>3.0.0</version>
                         <executions>
                             <execution>
                                 <id>run-benchmarks</id>