Update StatementInterface: add IteratorAggregate

Author: roxblnfk

src/Driver/Statement.php

@@ -21,7 +21,7 @@
  *
  * @internal Do not use this class directly.
  */
-final class Statement implements StatementInterface, \IteratorAggregate
+final class Statement implements StatementInterface
 {
     /** @var PDOStatement */
     private $pdoStatement;

src/StatementInterface.php

@@ -15,7 +15,7 @@
  * Must implement Traversable as IteratorAggregate or Iterator. You can access underlying PDOStatement
  * using getPDOStatement() method of `Cycle\Database\Driver\Statement` object.
  */
-interface StatementInterface
+interface StatementInterface extends \IteratorAggregate
 {
     // Fetch rows as assoc array. Default.
     public const FETCH_ASSOC = 2;