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

@@ -55,7 +55,7 @@
     <commons.scmPubCheckoutDirectory>site-content</commons.scmPubCheckoutDirectory>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <checkstyle.plugin.version>3.1.1</checkstyle.plugin.version>
+    <checkstyle.plugin.version>3.1.2</checkstyle.plugin.version>
     <spotbugs.plugin.version>4.2.0</spotbugs.plugin.version>
     <spotbugs.impl.version>4.2.0</spotbugs.impl.version>