tcp: fix metrics test build directive (libp2p#3052)

Merge pull request libp2p#556 from libp2p/gomod/update

update go-smux-yamux dependency

add gomod support // tag v0.0.1.

Merge pull request libp2p#504 from libp2p/update/manet

gx publish 6.0.29

gx publish 6.0.23

gx publish 6.0.22

gx publish 6.0.21

gx publish 6.0.20

gx publish 6.0.19

gx publish 6.0.18