Patch xdg-open in emacs-embark package

[jgart]

Just writing down a public TODO for myself:

TODO: patch xdg-open (xdg-utils) in emacs-embark package.

https://github.com/oantolin/embark/blob/f88314044d5492efeacb9466122889c6e60c8af4/embark.el#L3710

If anyone else wants to work on this feel free to.