bump tendermint and SDK version (#277)

* bump tendermint and SDK version

* update to SDK v0.42.0, make necessary updates to tesutil package

Co-authored-by: Anil Kumar Kammari <anil@vitwit.com>
Co-authored-by: Cory Levinson <cjlevinson@gmail.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/CosmWasm/wasmd v0.14.0
 	github.com/btcsuite/btcutil v1.0.2
 	github.com/cockroachdb/apd/v2 v2.0.2
-	github.com/cosmos/cosmos-sdk v0.41.0
+	github.com/cosmos/cosmos-sdk v0.42.0-rc0
 	github.com/enigmampc/btcutil v1.0.3-0.20200723161021-e2fb6adb2a25
 	github.com/gogo/protobuf v1.3.3
 	github.com/gorilla/mux v1.8.0
@@ -18,14 +18,16 @@ require (
 	github.com/regen-network/cosmos-proto v0.3.1
 	github.com/rs/zerolog v1.20.0
 	github.com/spf13/cast v1.3.1
-	github.com/spf13/cobra v1.1.1
+	github.com/spf13/cobra v1.1.3
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.0
-	github.com/tendermint/tendermint v0.34.3
-	github.com/tendermint/tm-db v0.6.3
+	github.com/tendermint/tendermint v0.34.8
+	github.com/tendermint/tm-db v0.6.4
 	google.golang.org/genproto v0.0.0-20210212180131-e7f2df4ecc2d // indirect
 	google.golang.org/grpc v1.35.0
 	gopkg.in/yaml.v2 v2.4.0
 )
 
+replace google.golang.org/grpc => google.golang.org/grpc v1.33.2
+
 replace github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.2-alpha.regen.4