Update go client

go.mod

@@ -7,7 +7,7 @@ replace github.com/VictoriaMetrics/fastcache => ./fastcache
 replace github.com/ethereum/go-ethereum => ./go-ethereum
 
 require (
-	github.com/EspressoSystems/espresso-sequencer-go v0.0.27
+	github.com/EspressoSystems/espresso-sequencer-go v0.0.28
 	github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible
 	github.com/Shopify/toxiproxy v2.1.4+incompatible
 	github.com/alicebob/miniredis/v2 v2.32.1

go.sum

@@ -7,8 +7,8 @@ github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53/go.mod h1:+3
 github.com/CloudyKit/jet/v3 v3.0.0/go.mod h1:HKQPgSJmdK8hdoAbKUUWajkHyHo4RaU5rMdUywE7VMo=
 github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ=
 github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
-github.com/EspressoSystems/espresso-sequencer-go v0.0.27 h1:xXjAQvuS7hRMk7jDrRe0gx/8a4BQOzUL8jfwWm+fPKo=
-github.com/EspressoSystems/espresso-sequencer-go v0.0.27/go.mod h1:BbU8N23RGl45QXSf/bYc8OQ8TG/vlMaPC1GU1acqKmc=
+github.com/EspressoSystems/espresso-sequencer-go v0.0.28 h1:8abX/5YkrGYLVuydct7fZFmz91ZafCcZ05v6lllpzto=
+github.com/EspressoSystems/espresso-sequencer-go v0.0.28/go.mod h1:BbU8N23RGl45QXSf/bYc8OQ8TG/vlMaPC1GU1acqKmc=
 github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible h1:1G1pk05UrOh0NlF1oeaaix1x8XzrfjIDK47TY0Zehcw=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=