Problem

We currently use the elastic/assign-one-project-github-action GH action to automatically assign PRs made by Elastic employees to an Elastic internal board.

This GH action uses an outdated API and thus fails.
The used `curl´ command comes back with

{
  "message": "Projects (classic) has been deprecated in favor of the new Projects experience.",
  "documentation_url": "https://docs.github.com/en/issues/planning-and-tracking-with-projects/automating-your-project/using-the-api-to-manage-projects",
  "status": "410"
}

which leads to the CI output

jq: error (at <stdin>:5): Cannot index string with string "name"
INITIAL_COLUMN_ID is not found.

Fixing elastic/assign-one-project-github-action seems to be non-trivial, if you look at the documentation of the new API.
The upstream project that Elastic once forked is no longer maintained, but suggests to use projectbot.

Solution

1. Reconsider if the automatic assignment of PRs to the internal board is still needed. If not, remove the CI workflow. Otherwise go to 2.
2. Switch the workflow to projectbot.