vendor, crypto, swarm: switch over to upstream sha3 package

common/types.go

@@ -27,7 +27,7 @@ import (
 	"strings"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/ethereum/go-ethereum/crypto/sha3"
+	"golang.org/x/crypto/sha3"
 )
 
 // Lengths of hashes and addresses in bytes.
@@ -196,7 +196,7 @@ func (a Address) Hash() Hash { return BytesToHash(a[:]) }
 // Hex returns an EIP55-compliant hex string representation of the address.
 func (a Address) Hex() string {
 	unchecksummed := hex.EncodeToString(a[:])
-	sha := sha3.NewKeccak256()
+	sha := sha3.NewLegacyKeccak256()
 	sha.Write([]byte(unchecksummed))
 	hash := sha.Sum(nil)