Bumped Checkstyle to version 10.20.1

Author: ethauvin

README.md

@@ -37,5 +37,5 @@ not provided by the extension. For example:
 
 ```java
 repositories = List.of(MAVEN_CENTRAL);
-scope(test).include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 20, 0)));
+scope(test).include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 20, 1)));
 ```

examples/src/bld/java/com/example/ExamplesBuild.java

@@ -23,7 +23,7 @@ public ExamplesBuild() {
 
         repositories = List.of(MAVEN_CENTRAL);
 
-        scope(test).include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 20, 0)));
+        scope(test).include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 20, 1)));
 
         testOperation().mainClass("com.example.ExamplesTest");
     }

src/bld/java/rife/bld/extension/CheckstyleOperationBuild.java

@@ -45,7 +45,7 @@ public CheckstyleOperationBuild() {
         scope(compile)
                 .include(dependency("com.uwyn.rife2", "bld", version(2, 1, 0)));
         scope(test)
-                .include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 20, 0)))
+                .include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 20, 1)))
                 .include(dependency("org.junit.jupiter", "junit-jupiter", version(5, 11, 3)))
                 .include(dependency("org.junit.platform", "junit-platform-console-standalone", version(1, 11, 3)))
                 .include(dependency("org.assertj", "assertj-core", version(3, 26, 3)));