Ran ruff

Author: julien bonnier

src/a2a/server/request_handlers/grpc_handler.py

@@ -54,7 +54,9 @@ def _get_metadata_value(
     context: grpc.aio.ServicerContext, key: str
 ) -> list[str]:
     md = context.invocation_metadata()
-    raw_values: list[str | bytes] = md.get_all(key) if isinstance(md, Metadata) else []
+    raw_values: list[str | bytes] = (
+        md.get_all(key) if isinstance(md, Metadata) else []
+    )
 
     return [e if isinstance(e, str) else e.decode('utf-8') for e in raw_values]