Update go-bitfield

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

go.mod

@@ -23,7 +23,7 @@ require (
 	github.com/fatih/color v1.8.0
 	github.com/filecoin-project/filecoin-ffi v0.30.4-0.20200716204036-cddc56607e1d
 	github.com/filecoin-project/go-address v0.0.4
-	github.com/filecoin-project/go-bitfield v0.2.1-0.20200920172649-837cbe6a1ed3
+	github.com/filecoin-project/go-bitfield v0.2.1
 	github.com/filecoin-project/go-cbor-util v0.0.0-20191219014500-08c40a1e63a2
 	github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03
 	github.com/filecoin-project/go-data-transfer v0.6.7

go.sum

@@ -230,8 +230,8 @@ github.com/filecoin-project/go-amt-ipld/v2 v2.1.0 h1:t6qDiuGYYngDqaLc2ZUvdtAg4UN
 github.com/filecoin-project/go-amt-ipld/v2 v2.1.0/go.mod h1:nfFPoGyX0CU9SkXX8EoCcSuHN1XcbN0c6KBh7yvP5fs=
 github.com/filecoin-project/go-bitfield v0.2.0 h1:gCtLcjskIPtdg4NfN7gQZSQF9yrBQ7mkT0qCJxzGI2Q=
 github.com/filecoin-project/go-bitfield v0.2.0/go.mod h1:CNl9WG8hgR5mttCnUErjcQjGvuiZjRqK9rHVBsQF4oM=
-github.com/filecoin-project/go-bitfield v0.2.1-0.20200920172649-837cbe6a1ed3 h1:HQa4+yCYsLq1TLM0kopeAhSCLbtZ541cWEi5N5rO+9g=
-github.com/filecoin-project/go-bitfield v0.2.1-0.20200920172649-837cbe6a1ed3/go.mod h1:CNl9WG8hgR5mttCnUErjcQjGvuiZjRqK9rHVBsQF4oM=
+github.com/filecoin-project/go-bitfield v0.2.1 h1:S6Uuqcspqu81sWJ0He4OAfFLm1tSwPdVjtKTkl5m/xQ=
+github.com/filecoin-project/go-bitfield v0.2.1/go.mod h1:CNl9WG8hgR5mttCnUErjcQjGvuiZjRqK9rHVBsQF4oM=
 github.com/filecoin-project/go-cbor-util v0.0.0-20191219014500-08c40a1e63a2 h1:av5fw6wmm58FYMgJeoB/lK9XXrgdugYiTqkdxjTy9k8=
 github.com/filecoin-project/go-cbor-util v0.0.0-20191219014500-08c40a1e63a2/go.mod h1:pqTiPHobNkOVM5thSRsHYjyQfq7O5QSCMhvuu9JoDlg=
 github.com/filecoin-project/go-crypto v0.0.0-20191218222705-effae4ea9f03 h1:2pMXdBnCiXjfCYx/hLqFxccPoqsSveQFxVLvNxy9bus=