Fixed xmpp crate pulling outdated tokio-xmpp version from crates.io
The xmpp crate pulled in an outdated version of tokio-xmpp from crates.io; This merge request has changed the xmpp crate's Cargo.toml so it pulls from this repo instead.
The xmpp crate pulled in an outdated version of tokio-xmpp from crates.io; This merge request has changed the xmpp crate's Cargo.toml so it pulls from this repo instead.