System update available information

[monofox]

Currently, the nextcloud URL is called with parameter skipApps=false. Beside of this, in addition, there is a parameter available called skipUpdate which is set by default to true.

Setting this parameter skipUpdate to false will reveal in addition following information:

{
    "data": {
      "nextcloud": {
        "system": {
          "update": {
            "lastupdatedat": 1713000090,
            "available": true,
            "available_version": "28.0.4.1"
          }
        }
    }
}

Would like to propose to:

• add a new environment / parameter to enable update information
• adding this new update information to the metrics output

It will improve the possibility to search and monitoring for new updates.