{
  "slug": "licensing",
  "page-type": "dashboard",
  "dashboard-type": "transaction",
  "published": true,
  "strapline": "Dashboard",
  "tagline": "This is a falsehood",
  "title": "Licensing",
  "department": {
    "title": "Cabinet Office",
    "abbr": "CO"
  }
}

{
  "slug": "licensing",
  "page-type": "dashboard",
  "dashboard-type": "transaction",
  "published": true,
  "strapline": "Dashboard",
  "tagline": "This is a falsehood",
  "title": "Licensing",
  "department": {
    "title": "Cabinet Office",
    "abbr": "CO"
  },
  "modules": [
  ]
}

Add an empty modules array
Add an empty modules array

Migration script requires dashboards to have modules as a key within the
json
