The readme in this repo links to an old version of the docs:
https://web.archive.org/web/20230115194214/https://docs.github.com/en/issues/planning-and-tracking-with-projects/automating-your-project/automating-projects-using-actions#example-workflow-authenticating-with-a-github-app

...which have now been updated here:
https://docs.github.com/en/issues/planning-and-tracking-with-projects/automating-your-project/automating-projects-using-actions#example-workflow-authenticating-with-a-github-app

...to use the new official action:

• https://github.com/actions/create-github-app-token

...which now in a few weeks seems to have gained the equivalent feature set (and hopefully stays maintained/improved).

Just thought I'd raise this issue to surface any thoughts on how these two actions relate to each other.

There also seems to be a bunch of others in the same field:

• Research learnings and ideas from similar GitHub Actions actions/create-github-app-token#42