A URL to the directory containing your existing macOS auto-update RELEASES.json file. If given this maker will download the existing file and add this release to it, also setting the "currentRelease" to this release.
For instance if your URL is "https://update.example.com/my-app/darwin/x64/RELEASES.json" you should provide "https://update.example.com/my-app/darwin/x64". This logic assumes that you published your files using a forge publisher compatible with the auto updater (e.g. S3).
Publishing this RELEASES.json will result in clients downloading this version as an update.
If this option is not set no RELEASES.json file will be generated.
Only used if
squirrelMacManifestBaseUrl is provided. Used to populate
the "notes" field of the releases manifest for macOS updates.