Bump github.com/mr-tron/base58 from 1.1.2 to 1.1.3

Bumps [github.com/mr-tron/base58](https://github.com/mr-tron/base58) from 1.1.2 to 1.1.3.
- [Release notes](https://github.com/mr-tron/base58/releases)
- [Commits](mr-tron/base58@v1.1.2...v1.1.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/multiformats/go-multihash
 require (
 	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1
 	github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771
-	github.com/mr-tron/base58 v1.1.2
+	github.com/mr-tron/base58 v1.1.3
 	github.com/spaolacci/murmur3 v1.1.0
 	golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8
 )

go.sum

@@ -4,6 +4,8 @@ github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771 h1:MHkK1uRtFbV
 github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
 github.com/mr-tron/base58 v1.1.2 h1:ZEw4I2EgPKDJ2iEw0cNmLB3ROrEmkOtXIkaG7wZg+78=
 github.com/mr-tron/base58 v1.1.2/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
+github.com/mr-tron/base58 v1.1.3 h1:v+sk57XuaCKGXpWtVBX8YJzO7hMGx4Aajh4TQbdEFdc=
+github.com/mr-tron/base58 v1.1.3/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=