multi: update to latest version of btcd in submodules

The main package has already been updated, but here we update the
submodules as well that only import things to use a constant or so here
and there.

tor/go.mod

@@ -1,7 +1,7 @@
 module github.com/lightningnetwork/lnd/tor
 
 require (
-	github.com/btcsuite/btcd v0.22.0-beta.0.20220207191057-4dc4ff7963b4
+	github.com/btcsuite/btcd v0.23.3
 	github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f
 	github.com/miekg/dns v1.1.43
 	github.com/stretchr/testify v1.7.0