Fix extractor selection on windows

[paulcacheux]

On Windows the extractor uses tar instead of zip because the code is using os.arch() (which returns the arch like x64 or arm64) instead of os.platform().
This PR fixes this problem.

[paulcacheux]

Here is a demo repo to demonstrate the problem: https://github.com/paulcacheux/poc-setup-go-demo

[paulcacheux]

Friendly ping, maybe @joshmgross
Is this repo still maintained ? It seems to be infected with bots..

[joshmgross]

👋 Hey @paulcacheux, thanks for the ping. I'll find a team to review and release this bug fix.

[paulcacheux]

The job that is failing seems to be unrelated to the changes. To fix it I think another PR updating the node dependencies would be needed in my opinion. Happy to help if needed

[mmorel-35]

Hi @paulcacheux, I agree with you on

The job that is failing seems to be unrelated to the changes.

I created #144 where I fixed those issues with the developpement of a new feature

[joshmgross]

This fix should now be available in https://github.com/actions/setup-go/releases/tag/v2.1.4, and v2 soon.

[paulcacheux]

Awesome, thank you !

[timhaines]

Great to see this. 💯 Would have saved me 20 minutes today if it was on v2 already.