fix: update go-schnorrkel version (#1557)

Author: kanishkatn

go.mod

@@ -2,7 +2,7 @@ module github.com/ChainSafe/gossamer
 
 require (
 	github.com/ChainSafe/chaindb v0.1.5-0.20210117220933-15e75f27268f
-	github.com/ChainSafe/go-schnorrkel v0.0.0-20210127175223-0f934d64ecac
+	github.com/ChainSafe/go-schnorrkel v0.0.0-20210222182958-bd440c890782
 	github.com/ChainSafe/log15 v1.0.0
 	github.com/OneOfOne/xxhash v1.2.5
 	github.com/btcsuite/btcutil v1.0.2

go.sum

@@ -8,6 +8,8 @@ github.com/ChainSafe/chaindb v0.1.5-0.20210117220933-15e75f27268f h1:qDmWdUIE1cg
 github.com/ChainSafe/chaindb v0.1.5-0.20210117220933-15e75f27268f/go.mod h1:WBsCSLGM7+DvSYU6cFVUltahwU7Sw4cN3e8kiLdNFJM=
 github.com/ChainSafe/go-schnorrkel v0.0.0-20210127175223-0f934d64ecac h1:mZyOXXu+q/op10XOYRzdpIxWWreS/zCYhl+UNpRv2O0=
 github.com/ChainSafe/go-schnorrkel v0.0.0-20210127175223-0f934d64ecac/go.mod h1:URdX5+vg25ts3aCh8H5IFZybJYKWhJHYMTnf+ULtoC4=
+github.com/ChainSafe/go-schnorrkel v0.0.0-20210222182958-bd440c890782 h1:lwmjzta2Xu+3rPVY/VeNQj2xfNkyih4CwyRxYg3cpRQ=
+github.com/ChainSafe/go-schnorrkel v0.0.0-20210222182958-bd440c890782/go.mod h1:URdX5+vg25ts3aCh8H5IFZybJYKWhJHYMTnf+ULtoC4=
 github.com/ChainSafe/log15 v1.0.0 h1:vRDVtWtVwIH5uSCBvgTTZh6FA58UBJ6+QiiypaZfBf8=
 github.com/ChainSafe/log15 v1.0.0/go.mod h1:5v1+ALHtdW0NfAeeoYyKmzCAMcAeqkdhIg4uxXWIgOg=
 github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=