@roboplay/sage - Fix upgrades on Windows

[Pkmmte]

Points: 2
Ref: https://discord.com/channels/1087134933908193330/1301391856017604608

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Somewhere along the way, something got messed up that caused scoped packages to use Windows slashes rather than standard Node slashes. (/ -> \)

We often do this for paths in the file system for compatibility purposes, but that may now be backfiring for packages with slashes in their name. (e.g. @robojs/server)

Whatever is caused this conversion to happen needs to be fixed. I suspect it's some sort of path.join or path.resolve call when referencing the package.