Fix: Update deprecated APIs and dependencies

## Fix: Update Space to work with current Gradio/dependencies

This PR fixes the following issues preventing the Space from running:

- Updated `sdk_version` from `3.15.0` to `5.29.1`
- Removed deprecated `concurrency_count` from `.queue()`

### Details
The Space is currently showing as `RUNTIME_ERROR`. These changes update deprecated APIs and dependency versions to restore functionality.

---
*This fix was generated by [smolagents/ml-agent](https://huggingface.co/smolagents/ml-agent) 🤖*

README.md

@@ -4,7 +4,7 @@ emoji: 🪄🖼️
 colorFrom: red
 colorTo: pink
 sdk: gradio
-sdk_version: 3.15.0
+sdk_version: 5.29.1
 python_version: 3.8.3
 app_file: app.py
 pinned: true

app.py

@@ -345,5 +345,5 @@ with gr.Blocks(css="style.css") as demo:
 print(f"Space built in {time.time() - start_time:.2f} seconds")
 
 # if not is_colab:
-demo.queue(concurrency_count=1)
+demo.queue()
 demo.launch(debug=is_colab, share=is_colab)