This adds support for the private_key_jwt client authentication method. Signed-off-by: James Elliott <james-d-elliott@users.noreply.github.com> Co-authored-by: Amir Zarrinkafsh <nightah@me.com>
This implements RFC9126 OAuth 2.0 Pushed Authorization Requests. See https://datatracker.ietf.org/doc/html/rfc9126 for the specification details.