Use for loop rather than iterator

See gh-33987

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/env/ConfigTreePropertySource.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2022 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,6 @@ import java.nio.file.attribute.BasicFileAttributes;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.EnumSet;
-import java.util.Iterator;
 import java.util.Map;
 import java.util.Set;
 import java.util.TreeMap;
@@ -229,9 +228,8 @@ public class ConfigTreePropertySource extends EnumerablePropertySource<Path> imp
 		}
 
 		private static boolean hasHiddenPathElement(Path path) {
-			Iterator<Path> iterator = path.iterator();
-			while (iterator.hasNext()) {
-				if (iterator.next().toString().startsWith("..")) {
+			for (Path element : path) {
+				if (element.toString().startsWith("..")) {
 					return true;
 				}
 			}