gitlab-ci workflows reference token.txt which is no longer being created

[llamashoes]

I referenced the issue on the relevant commit from a few weeks ago:
47daeaa#r124479639

{
  "type": "external_account",
  "audience": "xxx",
  "subject_token_type": "urn:ietf:params:oauth:token-type:jwt",
  "token_url": "https://sts.googleapis.com/v1/token",
  "credential_source": {
    "file": "token.txt"
  },
  "service_account_impersonation_url": "xxx",
  "service_account_impersonation": {
    "token_lifetime_seconds": 3[60](https://gitlab.com/xxxxx)0
  }
}

The issue seems to be related to the generated credentials.json referencing token.txt as the credential_source but that file is no longer being created in the defaults of the pipeline. This causes the pipelines to fail on rm token.txt as well as any stage after the gcp-auth stage.

ERROR: (gcloud.alpha.storage.cp) There was a problem refreshing your current auth tokens: File 'token.txt' was not found.

[ludoo]

Ouch. Thanks for spotting this, I can try getting to the bottom of this tomorrow, but do send a PR if you get there first.

[llamashoes]

Will do. You may beat me to it, but I will take look as well.