fix: Update Typecast default model to ssfm-v30

tts.py

@@ -622,8 +622,8 @@ def predict_tts(text: str, model: str) -> str:
     elif provider == "typecast":
         audio_path = predict_typecast_tts(
             text,
-            config.get("voice_id", "tc_612ed01c7eb720fddd3ddedf"),
-            config.get("model", "ssfm-v21"),
+            config.get("voice_id", "tc_684a7a1446e2a628b5b07230"),  # 재선 (v3.0)
+            config.get("model", "ssfm-v30"),
         )
         # Typecast returns WAV