feat(renovate-bot): make the Vault secret path for the Renovate GitLab token configurable
What
Make the Vault secret path for the Renovate GitLab token configurable with a new variable VAULT_RENOVATE_GITLAB_TOKEN_PATH
(yes it's a mouthful again and I'm bad at naming, but it's explicit).
Why
The use case for it is to set VAULT_RENOVATE_GITLAB_TOKEN_PATH
to the path for a Group Access Token for the gitlab-dedicated
group.
Suggested here: https://gitlab.com/gitlab-com/gl-infra/infra-mgmt/-/merge_requests/1037#note_2082008710