The action currently fails to run on the ARM runners GitHub have made available because the Docker image used for releases only is available for the linux/amd64 architecture.

Would it be possible to add support for linux/arm64 as well, please?

It looks like https://github.com/pypa/gh-action-pypi-publish/blob/HEAD/.github/workflows/build-and-push-docker-image.yml is what needs to be edited to accomplish this.

That workflow could potentially be changed to make use of some of the existing actions available for building Docker images, such as what I use here: https://github.com/Tenzer/dockerfiles/blob/main/.github/workflows/uwsgi-werkzeug-echo.yml. I don't know if that would be appreciated or not.