Fix code generation when body param is of type object (e.g., C# Dictionary)

The param was correctly declared as type Dict[str, Any] in the parameter
list, but the logic for the method body did not know what to do with it.

Author: Hendrik Eckardt

src/openapi_python_generator/language_converters/python/service_generator.py

@@ -53,6 +53,8 @@ def generate_body_param(operation: Operation) -> Union[str, None]:
             schema = media_type.media_type_schema
             if schema.type == "array":
                 return "[i.dict() for i in data]"
+            elif schema.type == "object":
+                return "data"
             else:
                 raise Exception(
                     f"Unsupported schema type for request body: {schema.type}"