fix: linting issue

Author: 1yam

src/aleph/sdk/wallets/ledger/ethereum.py

@@ -84,7 +84,9 @@ async def sign_message(self, message: Dict) -> Dict:
 
         # TODO: Check why the code without a wallet uses `encode_defunct`.
         msghash: bytes = get_verification_buffer(message)
-        sig: SignedMessage = sign_message(msghash, dongle=self._device, sender_path=self._account.path)
+        sig: SignedMessage = sign_message(
+            msghash, dongle=self._device, sender_path=self._account.path
+        )
 
         signature: HexStr = sig.signature
 
@@ -93,7 +95,9 @@ async def sign_message(self, message: Dict) -> Dict:
 
     async def sign_raw(self, buffer: bytes) -> bytes:
         """Sign a raw buffer."""
-        sig: SignedMessage = sign_message(buffer, dongle=self._device, sender_path=self._account.path)
+        sig: SignedMessage = sign_message(
+            buffer, dongle=self._device, sender_path=self._account.path
+        )
         signature: HexStr = sig.signature
         return bytes_from_hex(signature)