Enforce parameters as a List of Dictionaries in modelinfo.safetensors

This PR modifies the model_info method to ensure that the SafeTensorsInfo instance is
initialized with a list of dictionaries for the parameters attribute, as intended by
the class definition.

src/huggingface_hub/hf_api.py

@@ -856,7 +856,7 @@ def __init__(self, **kwargs):
         safetensors = kwargs.pop("safetensors", None)
         self.safetensors = (
             SafeTensorsInfo(
-                parameters=safetensors["parameters"],
+                parameters=[safetensors["parameters"]] if isinstance(safetensors["parameters"], dict) else safetensors["parameters"],
                 total=safetensors["total"],
             )
             if safetensors