Bump org.codehaus.mojo:exec-maven-plugin

Bumps [org.codehaus.mojo:exec-maven-plugin](https://github.com/mojohaus/exec-maven-plugin) from 3.6.3 to 3.6.4.
- [Release notes](https://github.com/mojohaus/exec-maven-plugin/releases)
- [Commits](mojohaus/exec-maven-plugin@3.6.3...3.6.4)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:exec-maven-plugin
  dependency-version: 3.6.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

labs/unicorn-store/infrastructure/cdk/pom.xml

@@ -29,7 +29,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>exec-maven-plugin</artifactId>
-                <version>3.6.3</version>
+                <version>3.6.4</version>
                 <configuration>
                     <mainClass>com.unicorn.UnicornStoreApp</mainClass>
                 </configuration>