Accommodate PHP 7.2 error message in createDataKey error test

Author: jmikola

tests/clientEncryption/clientEncryption-createDataKey_error-002.phpt

@@ -29,9 +29,9 @@ foreach ($tests as $opts) {
 ?>
 ===DONE===
 <?php exit(0); ?>
---EXPECT--
+--EXPECTF--
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Expected "keyMaterial" option to be MongoDB\BSON\Binary, int given
+Expected "keyMaterial" option to be MongoDB\BSON\Binary, %r(int|integer)%r given
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
 Expected "keyMaterial" option to be MongoDB\BSON\Binary, stdClass given
 ===DONE===