Bump maven-checkstyle-plugin from 3.1.0 to 3.1.1 (jenkinsci#341)

Bumps [maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/apache/maven-checkstyle-plugin/releases)
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-3.1.0...maven-checkstyle-plugin-3.1.1)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -206,7 +206,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-checkstyle-plugin</artifactId>
-          <version>3.1.0</version>
+          <version>3.1.1</version>
           <dependencies>
             <dependency>
               <groupId>com.puppycrawl.tools</groupId>