API Authentication method refers to JWT Auth (deprecated) instead of newer OAuth Client Credentials Auth

Issue in ./help/platform/privacy/getting-started-with-privacy-services-api.md

The video on this page still directs users through the steps to generate JWT Authentication credentials rather than the now-preferred OAuth Client Credentials authentication flow.

Open ./help/platform/privacy/getting-started-with-privacy-services-api.md and inspect the embedded video and surrounding authentication instructions. Update the video content or reference so it no longer directs users to generate JWT Authentication credentials and instead covers the preferred OAuth Client Credentials flow. Done means the page directs users to the newer authentication method.

Written by the indexing model from the issue text.