refactor(app.py): update slider default values

app.py

@@ -32,10 +32,10 @@ iface = gr.Interface(
         gr.Textbox(lines=2, placeholder="テキスト"),  # Text input
         gr.Textbox(lines=1, max_lines=1, placeholder="パス"),  # Path input
         gr.Slider(
-            minimum=0.0, maximum=1.0, step=0.01, default=0.0, label="SDP"
+            minimum=0.0, maximum=1.0, step=0.01, value=0.0, label="SDP"
         ),  # SDP input
         gr.Slider(
-            minimum=0.5, maximum=2.0, step=0.1, default=1.0, label="Speed"
+            minimum=0.5, maximum=2.0, step=0.1, value=1.0, label="Speed"
         ),  # Speed input
     ],
     outputs="audio",