update requirements.txt

requirements.txt

@@ -8,5 +8,5 @@ beautifulsoup4
 icetk
 cpm_kernels
 faiss-cpu
-gradio>=3.25.0
+gradio==3.24.1
 #detectron2@git+https://github.com/facebookresearch/detectron2.git@v0.6#egg=detectron2
\ No newline at end of file