CI: Enable installation_iojs test suit in GitHub Actions

[jwagantall]

No description provided.

[jwagantall]

@ljharb , looks like this test suit is passing without issues, except for the v0.40.0 tests that have been failing for a while in production.

Is there anyone looking into those?

[ljharb]

Those are expected to fail forever, since v0.40.0 won't ever have the bug fixed.

[jwagantall]

Those are expected to fail forever, since v0.40.0 won't ever have the bug fixed.

Thank you!

On regards to the Travis failure: https://app.travis-ci.com/github/nvm-sh/nvm/jobs/628361855

Looks like this failure is the same than the one I just started seeing in the slow test suits. It just started happening and is not an issue with the node version since the same stable version was passing a week before..

I'm gonna continue looking and see if this is something related to anything else.. :(

[ljharb]

I think it's a legit failure in both suites, though - these tests talk to the network and the registry and can have their results change over time, legitimately.