We update to the latest lndclient that now requires a label when
publishing an on-chain transaction. Instead of just adding an empty
string, we use the proper labels added in a previous commit.
Projects that use a later version of lnd than loop, but also depend on
loop itself would run into the following build error:
github.com/lightninglabs/loop/lndclient
../../go/pkg/mod/github.com/lightninglabs/loop@v0.2.3-alpha/lndclient/walletkit_client.go:30:11: undefined: lnwallet.SatPerKWeight
../../go/pkg/mod/github.com/lightninglabs/loop@v0.2.3-alpha/lndclient/walletkit_client.go:32:54: undefined: lnwallet.SatPerKWeight
../../go/pkg/mod/github.com/lightninglabs/loop@v0.2.3-alpha/lndclient/walletkit_client.go:144:33: undefined: lnwallet.SatPerKWeight
../../go/pkg/mod/github.com/lightninglabs/loop@v0.2.3-alpha/lndclient/walletkit_client.go:176:2: undefined: lnwallet.SatPerKWeight
../../go/pkg/mod/github.com/lightninglabs/loop@v0.2.3-alpha/lndclient/walletkit_client.go:189:9: undefined: lnwallet.SatPerKWeight