Remote: You are not allowed to upload code. Getting 403s

I’m trying to test out a simple push from CI here:

Here’ is the relevant job: auto_prelease (#1090983944) · Jobs · resister / Git CI · GitLab

Getting 403s.

I added the $SSH_PRIVATE_KEY as outlined here and its valid.

https://docs.gitlab.com/ee/ci/ssh_keys/

I added the project deploy key are the public key as outlined here:
https://docs.gitlab.com/ee/user/project/deploy_keys/index.html

Here’s is the .gitlab-ci.yml

I’m the maintainer and the branch is unprotected.

You project is not public.