Credential issue with gitlab provider

[edramos-97]

cli version: 1.39
Hi!

I'm experiencing a credential issue, more specifically using the gitlab provider when requesting to create a pull request the commits fail to fetch. Following are my job configuration and partial output

job:
  package-manager: npm_and_yarn
  allowed-updates:
    - dependency-type: direct
      update-type: all
  source:
    provider: gitlab
    hostname: example.com
    api-endpoint: https://example.com/api/v4
    repo: my-project
    directory: /my-folder
credentials:
  - type: git_source
    host: example.com
    password: token

updater | 2023/11/08 10:57:07 INFO Submitting @apollo/client pull request for creation
proxy | 2023/11/08 10:57:15 [119] GET https://example.com:443/api/v4/projects/my-project/repository/commits?
proxy | 2023/11/08 10:57:15 [119] * authenticating git server request (host: example.com)
proxy | 2023/11/08 10:57:15 [119] 404 https://example.com:443/api/v4/projects/my-project/repository/commits?
proxy | 2023/11/08 10:57:15 [119] * auth'd git request returned 404, retrying without auth
proxy | 2023/11/08 10:57:15 [119] * de-auth'd request returned 404, ignoring response

I've looked through the codebase and noticed the dependency on the gitlab api ruby project so I did some testing with that one to understand where the problem lies and found that project to be working fine running the following command.
gitlab commits my-project

[arielsrv]

I think the problem is that it doesn't propagate the token in the PRIVATE_TOKEN header, more info here: https://docs.gitlab.com/ee/api/commits.html.

Steps to reproduce in your code:
curl 'https://example.com:443/api/v4/projects/my-project/repository/commits?'
curl -H 'PRIVATE-TOKEN: token' 'https://example.com:443/api/v4/projects/my-project/repository/commits?'