Update composer dependencies

vendor/symfony/mime/Encoder/IdnAddressEncoder.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Mime\Encoder;
+
+use Symfony\Component\Mime\Exception\AddressEncoderException;
+
+/**
+ * An IDN email address encoder.
+ *
+ * Encodes the domain part of an address using IDN. This is compatible will all
+ * SMTP servers.
+ *
+ * This encoder does not support email addresses with non-ASCII characters in
+ * local-part (the substring before @). To send to such addresses, use
+ * Utf8AddressEncoder together with SmtpUtf8Handler. Your outbound SMTP server must support
+ * the SMTPUTF8 extension.
+ *
+ * @author Christian Schmidt
+ *
+ * @experimental in 4.3
+ */
+final class IdnAddressEncoder implements AddressEncoderInterface
+{
+    /**
+     * Encodes the domain part of an address using IDN.
+     *
+     * @throws AddressEncoderException If local-part contains non-ASCII characters
+     */
+    public function encodeString(string $address): string
+    {
+        $i = strrpos($address, '@');
+        if (false !== $i) {
+            $local = substr($address, 0, $i);
+            $domain = substr($address, $i + 1);
+
+            if (preg_match('/[^\x00-\x7F]/', $local)) {
+                throw new AddressEncoderException(sprintf('Non-ASCII characters not supported in local-part os "%s".', $address));
+            }
+
+            if (preg_match('/[^\x00-\x7F]/', $domain)) {
+                $address = sprintf('%s@%s', $local, idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46));
+            }
+        }
+
+        return $address;
+    }
+}