Fix some formatting after black version bump

swh/loader/core/metadata_fetchers.py

@@ -28,14 +28,11 @@ class MetadataFetcherProtocol(Protocol):
         credentials: CredentialsType,
         lister_name: str,
         lister_instance_name: str,
-    ):
-        ...
+    ): ...
 
-    def get_origin_metadata(self) -> List[RawExtrinsicMetadata]:
-        ...
+    def get_origin_metadata(self) -> List[RawExtrinsicMetadata]: ...
 
-    def get_parent_origins(self) -> List[Origin]:
-        ...
+    def get_parent_origins(self) -> List[Origin]: ...
 
 
 @functools.lru_cache()

swh/loader/core/nar.py

@@ -103,9 +103,9 @@ class Nar:
     ):
         self.hash_names = hash_names
         self.updater = {
-            hash_name: hashlib.sha256()
-            if hash_name.lower() == "sha256"
-            else hashlib.sha1()
+            hash_name: (
+                hashlib.sha256() if hash_name.lower() == "sha256" else hashlib.sha1()
+            )
             for hash_name in hash_names
         }
         format_output = format_output.lower()