Add Serai key confirmation to prevent rotating to an unusable key

Also updates alloy to the latest version

processor/ethereum/deployer/src/lib.rs

@@ -49,7 +49,7 @@ impl Deployer {
       // 100 gwei
       gas_price: 100_000_000_000u128,
       // TODO: Use a more accurate gas limit
-      gas_limit: 1_000_000u128,
+      gas_limit: 1_000_000u64,
       to: TxKind::Create,
       value: U256::ZERO,
       input: bytecode,