Update a vendor

curl --request PATCH \
  --url https://api.sandbox.getasset.com/v0/business/{business_id}/vendors/{vendor_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "email": "<string>",
  "contact_name": "<string>",
  "phone_number": "<string>",
  "external_id": "<string>"
}
'

{
  "data": {
    "name": "<string>",
    "id": "<string>",
    "external_id": "<string>",
    "contact_name": "<string>",
    "email": "<string>",
    "phone_number": "<string>"
  }
}