Bump maven-checkstyle-plugin from 3.2.0 to 3.2.1

Bumps [maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/apache/maven-checkstyle-plugin/releases)
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-3.2.0...maven-checkstyle-plugin-3.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -346,7 +346,7 @@ limitations under the License.
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>
-          <version>3.2.0</version>
+          <version>3.2.1</version>
           <configuration>
             <configLocation>config/maven_checks.xml</configLocation>
             <headerLocation>https://raw.github.com/codehaus-plexus/plexus-pom/master/src/main/resources/config/plexus-header.txt</headerLocation>