MBMS-43500 Pre need integraition highest rank updates

[ConnorJeff]

New schema

Please describe the new schema that is being added and include links to any relevant issues to help future developers understand the schema and related code.

Please ensure you have incremented the version in package.json.

• https://github.com/department-of-veterans-affairs/va.gov-team/issues/

Pull Requests to update the schema in related repositories

After you've merged your changes to vets-json-schema you'll need to make PR's to vets-website and vets-api. Please link them here.

• https://github.com/department-of-veterans-affairs/vets-api/pull/
• https://github.com/department-of-veterans-affairs/vets-website/pull/