Pin Gradio to avoid HfFolder import on Spaces.

Gradio <5.7.1 imports HfFolder, removed in huggingface_hub v1.x.
Pin Gradio 6.17.3 and update Space sdk_version accordingly.

README.md

@@ -4,7 +4,7 @@ emoji: 🎭
 colorFrom: green
 colorTo: yellow
 sdk: gradio
-sdk_version: "5.0.0"
+sdk_version: "6.17.3"
 python_version: "3.12"
 app_file: app.py
 pinned: false

requirements.txt

@@ -10,4 +10,4 @@ python-dotenv>=1.0.0
 huggingface-hub>=0.22.0
 datasets>=2.19.0
 sentencepiece>=0.2.0
-gradio>=5.0.0
+gradio==6.17.3