Update job level interview template.

Example request

{
  "privateInterview": true,
  "invitations": [
    {
      "email": {
        "subject": "Interview invitation",
        "content": "You have been invited for an interview"
      },
      "sms": {
        "content": "Hello, we would like to invite you to the interview",
        "confirmationMessage": "Thanks for the confirmation"
      },
      "whatsApp": {
        "enabled": true
      },
      "language": "en",
      "repeat": {
        "intervalInMinutes": 1440,
        "count": 2
      }
    }
  ],
  "reminders": [
    {
      "language": "en",
      "message": {
        "content": "Hello, we would like to remind you about upcoming interview."
      }
    }
  ]
}