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`).

coordinator/src/tributary/handle.rs

@@ -9,7 +9,7 @@ use ciphersuite::{group::GroupEncoding, Ciphersuite};
 use frost::dkg::Participant;
 
 use scale::{Encode, Decode};
-use serai_client::{Signature, validator_sets::primitives::KeyPair};
+use serai_client::validator_sets::primitives::KeyPair;
 
 use tributary::{Signed, TransactionKind, TransactionTrait};
 
@@ -554,7 +554,7 @@ impl<
                 self.spec.set(),
                 removed.into_iter().map(|key| key.to_bytes().into()).collect(),
                 key_pair,
-                Signature(sig),
+                sig.into(),
               )
               .await;
           }

coordinator/src/tributary/signing_protocol.rs

@@ -295,7 +295,7 @@ impl<T: DbTxn> DkgConfirmer<'_, T> {
       threshold_i_map_to_keys_and_musig_i_map(self.spec, &self.removed, self.key, preprocesses).1;
     let msg = set_keys_message(
       &self.spec.set(),
-      &self.removed.iter().map(|key| Public(key.to_bytes())).collect::<Vec<_>>(),
+      &self.removed.iter().map(|key| Public::from(key.to_bytes())).collect::<Vec<_>>(),
       key_pair,
     );
     self.signing_protocol().share_internal(&participants, preprocesses, &msg)