chore: update dependency com.puppycrawl.tools:checkstyle to v10.20.2

Author: renovate[bot]

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ shadow = "8.3.3"
 juppiter = "0.4.0"
 spotless = "6.25.0"
 nexusPublish = "2.0.0"
-checkstyleTools = "10.18.2"
+checkstyleTools = "10.20.2"
 
 # testing
 junit = "5.11.2"