updated plugin WP Mail SMTP version 2.4.0

wp-content/plugins/wp-mail-smtp/src/MailCatcherV6.php

@@ -146,4 +146,16 @@ class MailCatcherV6 extends \PHPMailer\PHPMailer\PHPMailer implements MailCatche
 
 		return static::$LE; // phpcs:ignore
 	}
+
+	/**
+	 * Create a unique ID to use for multipart email boundaries.
+	 *
+	 * @since 2.4.0
+	 *
+	 * @return string
+	 */
+	public function generate_id() {
+
+		return $this->generateId();
+	}
 }