Update app.py to compatible with gradio version >=4.0.0

app.py

@@ -138,7 +138,7 @@ with demo:
     gr.Markdown(INTRO_TEXT, elem_classes="markdown-text")
     gr.Markdown(HOW_TO, elem_classes="markdown-text")
 
-    with gr.Box():
+    with gr.Group():
         search_bar = gr.Textbox(
             placeholder="Search models and languages...", show_label=False, elem_id="search-bar"
         )