update to "Authorization API 1.0 – draft 05"

Workgroup OpenID AuthZEN published "Authorization API 1.0 – draft 05" on 8 November 2025 at https://openid.github.io/authzen/

Changes from draft 02 include new APIs and HTTPS bindings:
- Subject Search API
- Resource Search API
- Action Search API
- Policy Decision Point Metadata

Test data (request and response payloads) for each of the API requests in the Search scenario available at [Payload Spec](https://authzen-interop.net/docs/scenarios/search/).

Missing from the current implementation is [Request Identification](https://openid.github.io/authzen/#name-request-identification) using the HTTPS Header `X-Request-ID`.

> If the PEP specified a request identifier in the request, the PDP MUST include the same identifier in the response to that request.