Update app.py

cache examples but in lazy mode (first time only),
because this space is running in CPU it might be a good choice to cache your examples instead of letting each user wait for the CPU to finish running.

documentation: https://www.gradio.app/docs/examples

app.py

@@ -56,7 +56,7 @@ if __name__=="__main__":
           inputs = [img, labels, threshold, bounding_box_selection],
           outputs = [fig],
           fn=app_fn,
-          cache_examples=False,
+          cache_examples="lazy",
           label='Try this example input!'
       )