Bump maven-checkstyle-plugin from 3.1.1 to 3.1.2

Bumps [maven-checkstyle-plugin](https://github.com/apache/maven-checkstyle-plugin) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/apache/maven-checkstyle-plugin/releases)
- [Commits](apache/maven-checkstyle-plugin@maven-checkstyle-plugin-3.1.1...maven-checkstyle-plugin-3.1.2)

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

pom.xml

@@ -155,7 +155,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <commons.encoding>UTF-8</commons.encoding>
 
-    <checkstyle.version>3.1.1</checkstyle.version>
+    <checkstyle.version>3.1.2</checkstyle.version>
     <checkstyle.header.file>${basedir}/LICENSE-header.txt</checkstyle.header.file>
     <checkstyle.resourceExcludes>LICENSE.txt, NOTICE.txt, **/maven-archiver/pom.properties</checkstyle.resourceExcludes>