Send observability token in private-token header
What does this MR do and why?
Describe in detail what your merge request does and why.
The current token is a Grafana token. The Observability team is phasing out these tokens. Our Grafana token has already been revoked. We need to switch to using GitLab group tokens instead.
The previous token was a Bearer token. The new token is a GitLab group token, which needs to be sent as a private-token
header.
The GITLAB_O11Y_NAMESPACE_TOKEN
environment variable has already been updated to the new token value.
Author Check-list
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Has documentation been updated?
Edited by Reuben Pereira