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] <support@github.com>

pom.xml

@@ -311,7 +311,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-checkstyle-plugin</artifactId>
-                    <version>3.2.0</version>
+                    <version>3.2.1</version>
                     <configuration>
                         <configLocation>checkstyle.xml</configLocation>
                         <outputEncoding>UTF-8</outputEncoding>
@@ -546,7 +546,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-checkstyle-plugin</artifactId>
-                <version>3.2.0</version>
+                <version>3.2.1</version>
                 <configuration>
                     <configLocation>checkstyle.xml</configLocation>
                     <outputEncoding>UTF-8</outputEncoding>