JCR-4669: update checkstyle-plugin dependency to 3.1.2

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/trunk@1886205 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/jackrabbit-parent/pom.xml b/jackrabbit-parent/pom.xml
index b332b53..c3eb1aa 100644
--- a/jackrabbit-parent/pom.xml
+++ b/jackrabbit-parent/pom.xml
@@ -418,7 +418,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>3.1.1</version>
+        <version>3.1.2</version>
       </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>