Merge pull request #14 from neziw/renovate/checkstyle-10.x

Update dependency checkstyle to v10.26.1

Author: neziw

build.gradle

@@ -15,7 +15,7 @@ java {
 }
 
 checkstyle {
-    toolVersion = "10.23.0"
+    toolVersion = "10.26.1"
     maxWarnings = 0
 }