Create Trust Center subprocessor

curl --request POST \
  --url https://api.vanta.com/v1/trust-centers/{slugId}/subprocessors \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "url": "<string>",
  "description": "<string>",
  "location": "<string>",
  "purpose": "<string>"
}
'

{
  "id": "a2f7e1b9d0c3f4e5a6c7b8d9",
  "name": "Acme, Inc.",
  "description": "This is the description for the subprocessor.",
  "location": "US, EU",
  "purpose": "Cloud infrastructure",
  "url": "acme.com"
}