antelopev2 is not available for download

Hello insightface team! Thank you for such a wonderful library!

I have a problem and am not quite sure, what is the issue, but it seems that `antelopev2` model is not available for download right now:

```python
from insightface.app import FaceAnalysis
app = FaceAnalysis(name='antelopev2', root='./', providers=['CUDAExecutionProvider', 'CPUExecutionProvider'])
app.prepare(ctx_id=0, det_size=(640, 640))
````

and I get the following error:

```
RuntimeError: Failed downloading url https://github.com/deepinsight/insightface/releases/download/v0.7/antelopev2.zip
```

Could you please clarify, what is happening here? Maybe @nttstar can help with that?