chore: pass context through to external requests

[ptescher]

Proposed changes

Pass the request context through so that authenticator etc requests have a proper parent context.

This makes sure that the tracing frameworks like Jaeger get the whole picture.

Checklist

• I have read the contributing guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.