feat: leverage type-safe /p2p in multiaddr

This updates `multiaddr` to version `0.19`.

Depends-On: #3656.
Depends-On: https://github.com/multiformats/rust-multiaddr/pull/83.
Resolves: #4039.

Pull-Request: #4037.

transports/websocket/src/lib.rs

@@ -338,7 +338,7 @@ mod tests {
 
         let outbound = new_ws_config()
             .boxed()
-            .dial(addr.with(Protocol::P2p(PeerId::random().into())))
+            .dial(addr.with(Protocol::P2p(PeerId::random())))
             .unwrap();
 
         let (a, b) = futures::join!(inbound, outbound);