Run windows tests with `-race`

[mstoykov]

Because of a recent issue -race needs CGO which needs gcc under windows :( .
We should still be able to run our test with -race even if that mean that we need to install gcc.

[vanshaj]

Hello @mstoykov and @na--
As per the discussion in the mentioned golang issue, there is a flag -vet which we can turn off to resolve this problem.
Kindly read comment for the fix or do we need to create a document on how to setup gcc so that we can add it here and help the community members.
kindly update me on the fix which you think is optimal and assign the issue so that I can start working on the same.

Regards
Vanshaj Dhar

[mstoykov]

@vanshaj there is no need for you to be assigned on an issue in order to work and make PRs.

I am going to assign you this time, but you can just open PRs especially for small PRs.

For larger - it is probably better to at least mention in the issue you are working on it, but unless it looks like we are working on it - we likely aren't :)