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](https://github.com/apache/maven-checkstyle-plugin/compare/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

@@ -451,7 +451,7 @@ 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>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
@@ -500,7 +500,7 @@ under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.2.0</version>
+        <version>3.2.1</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>

src/changes/changes.xml

@@ -104,7 +104,7 @@ The <action> type attribute can be add,update,fix,remove.
         Bump servlet-api from 2.3 to 2.5 #27.
       </action>
       <action dev="ggregory" type="update" due-to="Gary Gregory, Dependabot">
-        Bump maven-checkstyle-plugin from 2.7 to 3.2.0 #35, #101.
+        Bump maven-checkstyle-plugin from 2.7 to 3.2.1 #35, #101, #130.
       </action>
       <action dev="ggregory" type="update" due-to="Dependabot">
         Bump spotbugs-maven-plugin from 4.1.4 to 4.7.2.1 #33, #70, #78, #93, #97, #102, #112.