mod: bump btcd to version with signet deployment fix

This commit updates the btcd version to a more recent one in which a bug
was fixed that lead to SegWit and Taproot not being activated properly
on signet.
This update is not strictly necessary for lnd to work but we include it
in case anyone wants to install btcd through lnd's Makefile.

Author: guggero

go.mod

@@ -5,7 +5,7 @@ require (
 	github.com/NebulousLabs/fastrand v0.0.0-20181203155948-6fb6489aac4e // indirect
 	github.com/NebulousLabs/go-upnp v0.0.0-20180202185039-29b680b06c82
 	github.com/Yawning/aez v0.0.0-20180114000226-4dad034d9db2
-	github.com/btcsuite/btcd v0.21.0-beta.0.20210429225535-ce697fe7e82b
+	github.com/btcsuite/btcd v0.21.0-beta.0.20210513141527-ee5896bad5be
 	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f
 	github.com/btcsuite/btcutil v1.0.3-0.20201208143702-a53e38424cce
 	github.com/btcsuite/btcutil/psbt v1.0.3-0.20201208143702-a53e38424cce

go.sum

@@ -27,8 +27,8 @@ github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3/go.mod h1:3J08xEfcug
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btcd v0.21.0-beta.0.20201208033208-6bd4c64a54fa/go.mod h1:Sv4JPQ3/M+teHz9Bo5jBpkNcP0x6r7rdihlNL/7tTAs=
 github.com/btcsuite/btcd v0.21.0-beta.0.20210426180113-7eba688b65e5/go.mod h1:9n5ntfhhHQBIhUvlhDvD3Qg6fRUj4jkN0VB8L8svzOA=
-github.com/btcsuite/btcd v0.21.0-beta.0.20210429225535-ce697fe7e82b h1:+BMyRYlNCozjv6zGhnyHExB6JquAIYZRwsc5bxPEXrI=
-github.com/btcsuite/btcd v0.21.0-beta.0.20210429225535-ce697fe7e82b/go.mod h1:9n5ntfhhHQBIhUvlhDvD3Qg6fRUj4jkN0VB8L8svzOA=
+github.com/btcsuite/btcd v0.21.0-beta.0.20210513141527-ee5896bad5be h1:vDD/JWWS2v4GJUG/RZE/50wT6Saerbujijd7mFqgsKI=
+github.com/btcsuite/btcd v0.21.0-beta.0.20210513141527-ee5896bad5be/go.mod h1:9n5ntfhhHQBIhUvlhDvD3Qg6fRUj4jkN0VB8L8svzOA=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f h1:bAs4lUbRJpnnkd9VhRV3jjAVU7DJVjMaK+IsvSeZvFo=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
 github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=