Consider running build job on self-hosted runners

[galargh]

build job takes quite a long time (around 30 minutes when releasing kubo). I think we could speed it up by using a beefier machine underneath.

Discovered during ipfs/kubo#9237

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[aktech]

By the way, if you want a no-maintenance method to achieve that, you can use cirun.io for the same.

[galargh]

Thanks, we have https://github.com/pl-strflt/tf-aws-gh-runner which we're going to use for this.