Go-nitro cannot be built/tested with go 1.21

[lalexgap]

It looks like one of the indirect dependencies of libpbp2 fails to build on the latest version of golang.

$ go build ./...
# github.com/quic-go/quic-go/internal/qtls
../../go/pkg/mod/github.com/quic-go/[email protected]/internal/qtls/go121.go:5:13: cannot use "The version of quic-go you're using can't be built on Go 1.21 yet. For more details, please see https://github.com/quic-go/quic-go/wiki/quic-go-and-Go-versions." (untyped string constant "The version of quic-go you're using can't be built on Go 1.21 yet. F...) as int value in variable declaration

go version
go version go1.21.0 darwin/arm64

$ go mod why github.com/quic-go/quic-go
# github.com/quic-go/quic-go
github.com/statechannels/go-nitro/node/engine/messageservice/p2p-message-service
github.com/libp2p/go-libp2p
github.com/libp2p/go-libp2p/config
github.com/quic-go/quic-go

[lalexgap]

Based on this issue it looks like it will be fixed in the next release of lib p2p.