upgrade geth dep (#148)

docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3'
+version: '2'
 
 services:
   substrate:

go.mod

@@ -3,18 +3,20 @@ module github.com/centrifuge/go-substrate-rpc-client/v3
 go 1.16
 
 require (
-	github.com/aristanetworks/goarista v0.0.0-20190712234253-ed1100a1c015 // indirect
+	github.com/ChainSafe/go-schnorrkel v0.0.0-20210318173838-ccb5cd955283 // indirect
 	github.com/btcsuite/btcutil v1.0.2
 	github.com/davecgh/go-spew v1.1.1
 	github.com/deckarep/golang-set v1.7.1
-	github.com/ethereum/go-ethereum v1.9.25
+	github.com/ethereum/go-ethereum v1.10.2
 	github.com/gorilla/websocket v1.4.2
-	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/pierrec/xxHash v0.1.5
 	github.com/rs/cors v1.7.0
-	github.com/stretchr/testify v1.6.1
+	github.com/stretchr/testify v1.7.0
 	github.com/vedhavyas/go-subkey v1.0.2
-	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad
-	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
+	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
+	golang.org/x/sys v0.0.0-20210415045647-66c3f260301c // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )