New release of Torch
A few hours ago the release of Torch 1.9.0 and Torchaudio 0.9.0 was released and since then the notebooks are not working on Colab. As the scripts don't specify the exact version number, pip is installing the latest one.

An example of this error is in the notebook "Speaker Diarization Inference":
![MicrosoftTeams-image](https://user-images.githubusercontent.com/49459897/122088598-43449780-cddc-11eb-86bb-d5878ad222c8.png)

I used Torch versions 1.8.0 and torchaudio versions 0.8.0 and the problems were fixed.
![MicrosoftTeams-image (1)](https://user-images.githubusercontent.com/49459897/122088730-6a02ce00-cddc-11eb-9a07-cdb00fbc6302.png)

I found it important to report this bug to help new users.