Bump maven-checkstyle-plugin from 3.1.1 to 3.1.2 (apache#131)

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)

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

Author: dependabot[bot]

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>