fix: a proper commander migration to version 13.0.0

[eiri]

The version 13.0.0 of commander introduced a breaking change on excess of command-arguments. #793

Our CI was failing with error: too many arguments. Expected 0 arguments but got 1 in parseRestoreArgs, but a reason for that is not clear. For now I just set allowExcessArguments() on the parser to revert to the former behaviour, but if possible it would be proper to find out the root cause for the failure and properly fix it, probably by listing expected arguments on parser call.