Get a sequence step

curl --request GET \
  --url https://stoplight.io/mocks/replyteam/reply/765516802/sequences/{id}/steps/{step_id}

{
  "id": 123,
  "type": "Email",
  "number": 1,
  "delayInMinutes": 0,
  "template": {
    "id": 456,
    "subject": "Introduction Email",
    "body": "Hi {{firstName}},\n\nI wanted to reach out regarding..."
  }
}