Foundations V5.5.3

I need to download Foundations V5.5.3 as this is the latest version that is compatible with PlanetPress Connect. Do you know how I can get that release level?

You can get all releases from https://unpkg.com/browse/foundation-sites@5.5.3/ and https://www.jsdelivr.com/package/npm/foundation-sites?version=5.5.3