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

Bumps [org.apache.maven.plugins:maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 3.1.1 to 3.3.1.
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-3.1.1...maven-checkstyle-plugin-3.3.1)

---
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>

Author: dependabot[bot]

pom.xml

@@ -55,7 +55,7 @@
 
     <!-- Plugin versions, please keep in alphabetical order -->
     <version.buildnumber.plugin>3.2.0</version.buildnumber.plugin>
-    <version.checkstyle.plugin>3.1.1</version.checkstyle.plugin>
+    <version.checkstyle.plugin>3.3.1</version.checkstyle.plugin>
     <version.compiler.plugin>3.8.1</version.compiler.plugin>
     <version.deploy.plugin>2.8.2</version.deploy.plugin>
     <version.enforcer.plugin>3.0.0-M2</version.enforcer.plugin>