Upgrade to libp2p v0.19 - Changes the default PeerId representation (#6064)

* Upgrade to libp2p v0.19

* Listen on IPv6 by default

* Increase channels sizes

* Use spec-compliant noise protocol

* Show legacy PeerId

* Switch order of Noise protocols

* Switch to crates.io version

* Fix subkey's version

* Fix line width and Wasm build

* I think Wasm is fixed for real this time

substrate/bin/node/browser-testing/Cargo.toml

@@ -8,7 +8,7 @@ license = "Apache-2.0"
 
 [dependencies]
 futures-timer = "3.0.2"
-libp2p = { version = "0.18.0", default-features = false }
+libp2p = { version = "0.19.0", default-features = false }
 jsonrpc-core = "14.0.5"
 serde = "1.0.106"
 serde_json = "1.0.48"