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 `3.16.2` 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

@@ -1,7 +1,7 @@
 ---
 title: InstructPix2Pix
 sdk: gradio
-sdk_version: 3.16.2
+sdk_version: 5.29.1
 app_file: edit_app.py
 pinned: true
 ---

edit_app.py

@@ -184,7 +184,7 @@ def main():
             outputs=[steps, randomize_seed, seed, randomize_cfg, text_cfg_scale, image_cfg_scale, edited_image],
         )
 
-    demo.queue(concurrency_count=1)
+    demo.queue()
     demo.launch(share=False)