curl --request DELETE \
  --url https://api.usezombie.com/v1/workspaces/{workspace_id}/skills/{skill_ref}/secrets/{key_name} \
  --header 'Authorization: Bearer <token>'

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "details": {}
  },
  "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}