update stub

Author: devnexen

ext/sockets/sockets.stub.php

@@ -74,7 +74,7 @@ function socket_sendto(Socket $socket, string $data, int $length, int $flags, st
  * @return array<string, mixed>|int|false
  * @refcount 1
  */
-function socket_get_option(Socket $socket, int $level, int $option): array|int|false {}
+function socket_get_option(Socket $socket, int $level, int $option): array|int|string|false {}
 
 /**
  * @return array<string, mixed>|int|false