bump the 0.4.2 version
can't pass without it.
https://dev.azure.com/nim-lang/Nim/_build/results?buildId=25249&view=logs&jobId=c6054849-8341-5e23-b888-79fd7ec95d3a&j=c6054849-8341-5e23-b888-79fd7ec95d3a&t=8f082e70-3e0a-5206-473a-da5bdc1e1c68

@dom96 