How to deploy Gradio to Pypi using GitHub actions

We've set up a GitHub action to automate deploying to Pypi: https://github.com/gradio-app/gradio/blob/main/.github/workflows/deploy-pypi.yml

To trigger it, simply do the following:

1. Create a new branch
2. Update the version number in gradio/version.txt -- this will be the version number of the release and it can be something like 3.1.0 (or something like 3.1.0b1 for a pre-release)
3. Merge your branch into main OR any other branch that begins with release*

That's it! You can view the logs here: https://github.com/gradio-app/gradio/actions/workflows/deploy-pypi.yml