Update develop to patch-polkadot-sdk

Allows us to finally remove the old `serai-dex/substrate` repository _and_
should have CI pass without issue on `develop` again.

The changes made here should be trivial and maintain all prior
behavior/functionality. The most notable are to `chain_spec.rs`, in order to
still use a SCALE-encoded `GenesisConfig` (avoiding `serde_json`).

networks/ethereum/src/crypto.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use group::ff::PrimeField;
 use k256::{
   elliptic_curve::{ops::Reduce, point::AffineCoordinates, sec1::ToEncodedPoint},

networks/ethereum/src/tests/crypto.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use rand_core::OsRng;
 
 use group::ff::{Field, PrimeField};

networks/ethereum/src/tests/mod.rs

@@ -1,3 +1,5 @@
+#![allow(deprecated)]
+
 use std::{sync::Arc, collections::HashMap};
 
 use rand_core::OsRng;