build: update to latest btcd and btcwallet versions

This update introduces backwards compatibility for btcd nodes running
versions prior to v0.20.1-beta.

lnwallet/btcwallet/btcwallet.go

@@ -304,7 +304,7 @@ func (b *BtcWallet) SendOutputs(outputs []*wire.TxOut,
 	if len(outputs) < 1 {
 		return nil, lnwallet.ErrNoOutputs
 	}
-	return b.wallet.SendOutputs(outputs, defaultAccount, 1, feeSatPerKB)
+	return b.wallet.SendOutputs(outputs, defaultAccount, 1, feeSatPerKB, "")
 }
 
 // CreateSimpleTx creates a Bitcoin transaction paying to the specified
@@ -434,7 +434,7 @@ func (b *BtcWallet) ListUnspentWitness(minConfs, maxConfs int32) (
 // (currently ErrDoubleSpend). If the transaction is already published to the
 // network (either in the mempool or chain) no error will be returned.
 func (b *BtcWallet) PublishTransaction(tx *wire.MsgTx) error {
-	if err := b.wallet.PublishTransaction(tx); err != nil {
+	if err := b.wallet.PublishTransaction(tx, ""); err != nil {
 
 		// If we failed to publish the transaction, check whether we
 		// got an error of known type.