[phpxmlrpc/phpxmlrpc] phpxmlrpc vulnerable to argument injection

phpxmlrpc vulnerable to argument injection via local file access in Client:send via manipulation of $protocol argument.

References

• https://github.com/gggeek/phpxmlrpc/issues/81
• https://github.com/FriendsOfPHP/security-advisories/blob/master/phpxmlrpc/phpxmlrpc/2022-11-28-1.yaml
• https://github.com/gggeek/phpxmlrpc/releases/tag/4.9.0
• https://github.com/advisories/GHSA-q7qq-9gx2-ggxv