Relax parsing of go version

[martin-sucha]

Development versions of Go have an additional token before the version:

go version devel go1.21-02d8ebda83 Mon Feb 6 22:13:07 2023 +0000 linux/amd64

Use the regular expression on the whole output of go version instead of just on the third token.

Fixes https://github.com/bwplotka/bingo/issues/131

[martin-sucha]

Also it seems the regex should not include ? after go, but I have not included this change in the pull request: var versionRegexp = regexp.MustCompile(`go([0-9]+)(\.[0-9]+)?(\.[0-9]+)?`)

[bwplotka]

Hey, thanks! Let's make sure this works on dev version of Go, why not. Do you mind adding test and ensuring existing tests don't fail?

[martin-sucha]

Fixed.