Bump org.apache.maven.plugins:maven-checkstyle-plugin

Bumps [org.apache.maven.plugins:maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 3.5.0 to 3.6.0.
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-3.5.0...maven-checkstyle-plugin-3.6.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-checkstyle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -89,7 +89,7 @@
       <version.buildhelper.plugin>3.6.0</version.buildhelper.plugin>
       <version.buildnumber.plugin>3.2.1</version.buildnumber.plugin>
       <version.bundle.plugin>5.1.9</version.bundle.plugin>
-      <version.checkstyle.plugin>3.5.0</version.checkstyle.plugin>
+      <version.checkstyle.plugin>3.6.0</version.checkstyle.plugin>
       <version.clean.plugin>3.4.0</version.clean.plugin>
       <version.clover.plugin>4.1.10.1</version.clover.plugin>
       <version.cobertura.plugin>2.7</version.cobertura.plugin>