Error message about JLSO file format could be clearer

[raphaelsaavedra]

[error | JLSO]: ArgumentError: Unsupported version (4.0.0). Expected a value between (1-3).
ERROR: ArgumentError: Unsupported version (4.0.0). Expected a value between (1-3).

Because it follows the same format as packages, 4.0.0 might give the wrong impression that the error is about some version conflict of a package that is at v4.0.0. Explicitly saying that this is a JLSO file format error would be helpful.