Get a user group with users

curl --request GET \
  --url https://core.api.ravennahq.com/api/user-groups/{id}/users \
  --header 'x-ravenna-api-token: <api-key>'

{
  "id": "<string>",
  "name": "<string>",
  "description": "<string>",
  "emoji": "<string>",
  "icon": "<string>",
  "color": "<string>",
  "organizationId": "<string>",
  "users": [
    {
      "id": "<string>",
      "firstName": "<string>",
      "lastName": "<string>",
      "email": "<string>",
      "image": "<string>",
      "slackTeamId": "<string>",
      "slackUserId": "<string>",
      "slackRealName": "<string>",
      "slackImageUrl": "<string>",
      "emailVerified": "<string>",
      "defaultWorkspaceId": "<string>",
      "isGuestCreated": true,
      "isBot": true,
      "createdAt": "<string>",
      "auth0Id": "<string>",
      "updatedAt": "<string>"
    }
  ],
  "_count": {
    "users": 123
  },
  "createdAt": "<string>",
  "updatedAt": "<string>"
}