Merge pull request #218 from xdev-software/renovate/checkstyleversion

Update checkstyleVersion to v13.1.0

Author: AB-xdev

build.gradle

@@ -7,7 +7,7 @@ plugins {
 }
 
 ext {
-    checkstyleVersion = '13.0.0'
+    checkstyleVersion = '13.1.0'
 
     pmdVersion = '7.21.0'
 }