ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

unused variable: `backend_pk`

unused variable: `hash_algorithm`

function `parse_public_key_pem` is never used

unused import: `jwt_simple::prelude::*`

unused imports: `Value` and `json`

unused import: `rusty_acme::prelude::*`

unused import: `rusty_jwt_tools::prelude::*`

unused imports: `E2eTest`, `EnrollmentFlow`, `OidcProvider`, `TestError`, `id_token::resign_id_token`, `rand_base64_str`, `rand_client_id`, `stepca::CaCfg`, `wire_server::OauthCfg`, and `wiremock::WiremockImage`

creating a shared reference to mutable static is discouraged