core/homeassistant/components/update/icons.json

{
  "entity_component": {
    "_": {
      "default": "mdi:package-up",
      "state": {
        "off": "mdi:package"
      }
    }
  },
  "services": {
    "clear_skipped": {
      "service": "mdi:package"
    },
    "install": {
      "service": "mdi:package-down"
    },
    "skip": {
      "service": "mdi:package-check"
    }
  }
}