Bump maven-checkstyle-plugin from 3.1.0 to 3.1.1 (#57)

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](https://github.com/apache/maven-checkstyle-plugin/compare/maven-checkstyle-plugin-3.1.0...maven-checkstyle-plugin-3.1.1)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/pom.xml b/pom.xml
index 659c7cb..dc1fb39 100644
--- a/pom.xml
+++ b/pom.xml
@@ -619,7 +619,7 @@
         <plugin>

           <groupId>org.apache.maven.plugins</groupId>

           <artifactId>maven-checkstyle-plugin</artifactId>

-          <version>3.1.0</version>

+          <version>3.1.1</version>

           <configuration>

             <configLocation>${basedir}/conf/checkstyle.xml</configLocation>

             <suppressionsLocation>${basedir}/conf/checkstyle-suppressions.xml</suppressionsLocation>