Update to the latest libp2p (#2239)

Updates to the latest libp2p and ignores RUSTSEC-2020-0146 from cargo-audit


Co-authored-by: Michael Sproul <michael@sigmaprime.io>

consensus/state_processing/benches/benches.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 extern crate env_logger;
 
 use criterion::Criterion;

consensus/swap_or_not_shuffle/benches/benches.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use criterion::Criterion;
 use criterion::{black_box, criterion_group, criterion_main, Benchmark};
 use swap_or_not_shuffle::{compute_shuffled_index, shuffle_list as fast_shuffle};

consensus/tree_hash/benches/benches.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use criterion::Criterion;
 use criterion::{black_box, criterion_group, criterion_main, Benchmark};
 use lazy_static::lazy_static;

consensus/types/benches/benches.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use criterion::Criterion;
 use criterion::{black_box, criterion_group, criterion_main, Benchmark};
 use rayon::prelude::*;