refactor: Declares the template method as final (Issue 1099) (#2057)

template-method/src/main/java/com/iluwatar/templatemethod/StealingMethod.java

@@ -41,7 +41,7 @@ public abstract class StealingMethod {
   /**
    * Steal.
    */
-  public void steal() {
+  public final void steal() {
     var target = pickTarget();
     LOGGER.info("The target has been chosen as {}.", target);
     confuseTarget(target);