List the Organization's Provider credentials, masked

curl "$VOCAL_API/v1/provider-credentials" \
  -H "Authorization: Bearer $VOCAL_API_KEY"

const response = await fetch(`${process.env.VOCAL_API}/v1/provider-credentials`, {
  headers: {
    Authorization: `Bearer ${process.env.VOCAL_API_KEY}`,
  },
});
console.log(response.status, await response.text());

import os

import requests

response = requests.get(
    f"{os.environ['VOCAL_API']}/v1/provider-credentials",
    headers={
        "Authorization": f"Bearer {os.environ['VOCAL_API_KEY']}",
    },
)
print(response.status_code, response.text)