Get an SSL certificate

curl --request GET \
  --url {schemes}://api.upsun.com/projects/{projectId}/certificates/{certificateId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "certificate": "<string>",
  "chain": [
    "<string>"
  ],
  "is_provisioned": true,
  "is_invalid": true,
  "is_root": true,
  "domains": [
    "<string>"
  ],
  "auth_type": [
    "<string>"
  ],
  "issuer": [
    {
      "oid": "<string>",
      "alias": "<string>",
      "value": "<string>"
    }
  ],
  "expires_at": "2023-11-07T05:31:56Z"
}