CI: Downgrade Go version

[maschad]

These failures on CI suggest that the version of quic-go bing used can't be built on Go 1.20 yet. Should we downgrade it to a compatible version?

[achingbrain]

This is fixed now but it's almost certainly going to happen again.

Our options are:

1. Update go-libp2p-daemon to the latest libp2p which will give it webtransport support, then we can use a precompiled binary and not have to build the webtransport server in this repo from source - feat: update go-libp2p to 0.27.1 go-libp2p-daemon#281
2. Finish the node webtransport listener and remove the go parts of this repo - feat: add transport listener #31

My preference is for 2, but 1 might be faster.

[maschad]

Seeing as the go-libp2p-daemon's libp2p version is not going to be actively updated by design, I would say that we should invest the effort in 2 as well to remove it as a dependency.

[p-shahi]

closing in favor of #75

[MarcoPolo]

Option 3, which is the simplest, is to pin the version of Go.

[achingbrain]

The reason that wasn't added as an option above is that it means adding go config to every JS repo, which didn't feel like a natural thing to do.