Update checkstyle version and sync style updates
diff --git a/build.gradle b/build.gradle
index b7a5de0..2764382 100644
--- a/build.gradle
+++ b/build.gradle
@@ -192,7 +192,7 @@
 
     checkstyle {
         configFile = file("$rootDir/checkstyle.xml")
-        toolVersion = "6.5"
+        toolVersion = "6.17"
         ignoreFailures = false
         if (rootProject.hasProperty("checkstyle.ignoreFailures")) {
             ignoreFailures = rootProject.properties["checkstyle.ignoreFailures"].toBoolean()