fix outdated gr.inputs and gr.outputs

Since this space is listed on the [HF Space Docker Example](https://huggingface.co/docs/hub/en/spaces-sdks-docker-examples), I would like to fix the issue

`gr.inputs` and `gr.outputs` does not exist anymore but `gr.Image` and `gr.Label`

main.py

@@ -19,8 +19,8 @@ def predict(inp):
 def run():
     demo = gr.Interface(
         fn=predict,
-        inputs=gr.inputs.Image(type="pil"),
-        outputs=gr.outputs.Label(num_top_classes=3),
+        inputs=gr.Image(type="pil"),
+        outputs=gr.Label(num_top_classes=3),
     )
 
     demo.launch(server_name="0.0.0.0", server_port=7860)