test/external: Use rust-libp2p spec compliant X25519Spec

[mxinden]

jvm-libp2p/src/test/external/rust/ping-client/src/main.rs

Line 13 in 1e6f17f

use libp2p::noise::{Keypair, X25519, NoiseConfig};

We are deprecating X25519, please use X25519Spec instead.

See libp2p/rust-libp2p#3227.

[ajsutton]

hmm, I didn't even know that was there. Those interop tests haven't been running in CI so haven't been maintained and don't seem to be even compiling for the most part. I've put up a PR to remove them since they don't provide any value if we aren't running them anyway and a simple ping isn't a particularly good compatibility test anyway.

[mxinden]

Thanks @ajsutton for the quick response and follow-up!