chore: migration: private_key.key -> private_key.inner

see rust-bitcoin/rust-bitcoin#762

Author: sander2

bitcoin/src/lib.rs

@@ -722,12 +722,12 @@ impl BitcoinCoreApi for BitcoinCore {
         let address = Address::p2wpkh(&public_key, self.network).map_err(ConversionError::from)?;
         let private_key = self.rpc.dump_private_key(&address)?;
         let deposit_secret_key =
-            addr::calculate_deposit_secret_key(private_key.key, SecretKey::from_slice(&secret_key)?)?;
+            addr::calculate_deposit_secret_key(private_key.inner, SecretKey::from_slice(&secret_key)?)?;
         self.rpc.import_private_key(
             &PrivateKey {
                 compressed: private_key.compressed,
                 network: self.network,
-                key: deposit_secret_key,
+                inner: deposit_secret_key,
             },
             Some(DEPOSIT_LABEL),
             // rescan true by default

bitcoin/src/light/mod.rs

@@ -163,7 +163,7 @@ impl BitcoinCoreApi for BitcoinLight {
         }
 
         self.wallet.put_p2wpkh_key(mul_secret_key(
-            self.private_key.key,
+            self.private_key.inner,
             SecretKey::from_slice(&secret_key)?,
         )?)?;
 

bitcoin/src/light/wallet.rs

@@ -388,7 +388,7 @@ impl Wallet {
 
             let sig = self
                 .secp
-                .sign(&Message::from_slice(&sig_hash.into_inner()[..])?, &private_key.key);
+                .sign(&Message::from_slice(&sig_hash.into_inner()[..])?, &private_key.inner);
 
             pub struct EcdsaSig {
                 pub sig: Signature,

vault/src/system.rs

@@ -764,7 +764,7 @@ impl VaultService {
             tracing::info!("Registering bitcoin public key to the parachain...");
             let public_key = self.btc_rpc_master_wallet.get_new_public_key().await?;
             self.btc_parachain
-                .register_public_key(public_key.key.serialize().into())
+                .register_public_key(public_key.inner.serialize().into())
                 .await?;
         }