tweak: suppress coupling between objects warning

Author: Greg Bowler

src/Input.php

@@ -22,6 +22,7 @@
 /**
  * @implements ArrayAccess<string, ?string>
  * @implements Iterator<string, ?string>
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class Input implements ArrayAccess, Countable, Iterator {
 	use InputValueGetter;