update with Black changes

Author: adelevie

openapi_python_client/cli.py

@@ -159,7 +159,7 @@ def update(
     meta: MetaType = _meta_option,
     file_encoding: str = typer.Option("utf-8", help="Encoding used when writing generated"),
     config_path: Optional[pathlib.Path] = CONFIG_OPTION,
-    fail_on_warning: bool = False
+    fail_on_warning: bool = False,
 ) -> None:
     """Update an existing OpenAPI Client library
 
@@ -188,6 +188,6 @@ def update(
         meta=meta,
         custom_template_path=custom_template_path,
         file_encoding=file_encoding,
-        config=config
+        config=config,
     )
     handle_errors(errors, fail_on_warning)