gx: update libp2p stuff

assets/assets.go

commands/context.go

core/builder.go

core/commands/add.go

core/commands/bitswap.go

core/commands/block.go

core/commands/cat.go

core/commands/cmdenv/env.go

core/commands/dag/dag.go

core/commands/dht.go

core/commands/dns.go

core/commands/files.go

core/commands/get.go

core/commands/id.go

core/commands/keystore.go

core/commands/ls.go

core/commands/name/ipns.go

core/commands/name/publish.go

core/commands/object/diff.go

core/commands/object/object.go