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`).

substrate/coins/pallet/src/lib.rs

@@ -43,12 +43,11 @@ pub mod pallet {
 
   #[pallet::config]
   pub trait Config<I: 'static = ()>: frame_system::Config<AccountId = Public> {
-    type RuntimeEvent: From<Event<Self, I>> + IsType<<Self as frame_system::Config>::RuntimeEvent>;
     type AllowMint: AllowMint;
   }
 
   #[pallet::genesis_config]
-  #[derive(Clone, PartialEq, Eq, Debug, Encode, Decode)]
+  #[derive(Clone, Debug)]
   pub struct GenesisConfig<T: Config<I>, I: 'static = ()> {
     pub accounts: Vec<(T::AccountId, Balance)>,
     pub _ignore: PhantomData<I>,
@@ -281,6 +280,22 @@ pub mod pallet {
       }
     }
 
+    fn can_withdraw_fee(
+      who: &Public,
+      _call: &T::RuntimeCall,
+      _dispatch_info: &DispatchInfoOf<T::RuntimeCall>,
+      fee: Self::Balance,
+      _tip: Self::Balance,
+    ) -> Result<(), TransactionValidityError> {
+      if fee == 0 {
+        return Ok(());
+      }
+      if Self::balance(*who, Coin::Serai).0 < fee {
+        Err(InvalidTransaction::Payment)?;
+      }
+      Ok(())
+    }
+
     fn correct_and_deposit_fee(
       who: &Public,
       _dispatch_info: &DispatchInfoOf<T::RuntimeCall>,

substrate/coins/pallet/src/mock.rs

@@ -2,16 +2,10 @@
 
 use super::*;
 
-use frame_support::{
-  construct_runtime,
-  traits::{ConstU32, ConstU64},
-};
+use frame_support::{construct_runtime, derive_impl};
 
-use sp_core::{H256, sr25519::Public};
-use sp_runtime::{
-  traits::{BlakeTwo256, IdentityLookup},
-  BuildStorage,
-};
+use sp_core::sr25519::Public;
+use sp_runtime::{traits::IdentityLookup, BuildStorage};
 
 use crate as coins;
 
@@ -25,35 +19,14 @@ construct_runtime!(
   }
 );
 
+#[derive_impl(frame_system::config_preludes::TestDefaultConfig)]
 impl frame_system::Config for Test {
-  type BaseCallFilter = frame_support::traits::Everything;
-  type BlockWeights = ();
-  type BlockLength = ();
-  type RuntimeOrigin = RuntimeOrigin;
-  type RuntimeCall = RuntimeCall;
-  type Nonce = u64;
-  type Hash = H256;
-  type Hashing = BlakeTwo256;
   type AccountId = Public;
   type Lookup = IdentityLookup<Self::AccountId>;
   type Block = Block;
-  type RuntimeEvent = RuntimeEvent;
-  type BlockHashCount = ConstU64<250>;
-  type DbWeight = ();
-  type Version = ();
-  type PalletInfo = PalletInfo;
-  type AccountData = ();
-  type OnNewAccount = ();
-  type OnKilledAccount = ();
-  type SystemWeightInfo = ();
-  type SS58Prefix = ();
-  type OnSetCode = ();
-  type MaxConsumers = ConstU32<16>;
 }
 
 impl Config for Test {
-  type RuntimeEvent = RuntimeEvent;
-
   type AllowMint = ();
 }