build(deps): bump github.com/ethereum/go-ethereum from 1.10.3 to 1.10.8

Bumps [github.com/ethereum/go-ethereum](https://github.com/ethereum/go-ethereum) from 1.10.3 to 1.10.8.
- [Release notes](https://github.com/ethereum/go-ethereum/releases)
- [Commits](ethereum/go-ethereum@v1.10.3...v1.10.8)

---
updated-dependencies:
- dependency-name: github.com/ethereum/go-ethereum
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/cosmos/cosmos-sdk v0.44.0
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/cosmos/ibc-go v1.2.0
-	github.com/ethereum/go-ethereum v1.10.3
+	github.com/ethereum/go-ethereum v1.10.8
 	github.com/gogo/protobuf v1.3.3
 	github.com/golang/protobuf v1.5.2
 	github.com/gorilla/mux v1.8.0
@@ -44,13 +44,9 @@ require (
 	github.com/99designs/keyring v1.1.6 // indirect
 	github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d // indirect
 	github.com/DataDog/zstd v1.4.8 // indirect
-	github.com/Masterminds/goutils v1.1.1 // indirect
-	github.com/Masterminds/semver v1.5.0 // indirect
-	github.com/Masterminds/sprig v2.22.0+incompatible // indirect
 	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
-	github.com/VictoriaMetrics/fastcache v1.5.7 // indirect
+	github.com/VictoriaMetrics/fastcache v1.6.0 // indirect
 	github.com/Workiva/go-datastructures v1.0.52 // indirect
-	github.com/aokoli/goutils v1.1.1 // indirect
 	github.com/armon/go-metrics v0.3.9 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bgentry/speakeasy v0.1.0 // indirect
@@ -72,7 +68,6 @@ require (
 	github.com/dvsekhvalnov/jose2go v0.0.0-20200901110807-248326c1351b // indirect
 	github.com/edsrzf/mmap-go v1.0.0 // indirect
 	github.com/enigmampc/btcutil v1.0.3-0.20200723161021-e2fb6adb2a25 // indirect
-	github.com/envoyproxy/protoc-gen-validate v0.6.1 // indirect
 	github.com/felixge/httpsnoop v1.0.1 // indirect
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/gballet/go-libpcsclite v0.0.0-20190607065134-2772fd86a8ff // indirect
@@ -96,10 +91,8 @@ require (
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hdevalence/ed25519consensus v0.0.0-20210204194344-59a8610d2b87 // indirect
 	github.com/holiman/bloomfilter/v2 v2.0.3 // indirect
-	github.com/holiman/uint256 v1.1.1 // indirect
-	github.com/huandu/xstrings v1.3.2 // indirect
-	github.com/huin/goupnp v1.0.1-0.20210310174557-0ca763054c88 // indirect
-	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/holiman/uint256 v1.2.0 // indirect
+	github.com/huin/goupnp v1.0.2 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jackpal/go-nat-pmp v1.0.2-0.20160603034137-1fa385a6f458 // indirect
 	github.com/jmhodges/levigo v1.0.0 // indirect
@@ -112,11 +105,8 @@ require (
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mimoo/StrobeGo v0.0.0-20181016162300-f8f6d4d2b643 // indirect
 	github.com/minio/highwayhash v1.0.1 // indirect
-	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.4.1 // indirect
-	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/mtibben/percent v0.2.1 // indirect
-	github.com/mwitkow/go-proto-validators v0.3.2 // indirect
 	github.com/olekukonko/tablewriter v0.0.5 // indirect
 	github.com/pelletier/go-toml v1.9.3 // indirect
 	github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
@@ -126,8 +116,6 @@ require (
 	github.com/prometheus/common v0.29.0 // indirect
 	github.com/prometheus/procfs v0.6.0 // indirect
 	github.com/prometheus/tsdb v0.7.1 // indirect
-	github.com/pseudomuto/protoc-gen-doc v1.5.0 // indirect
-	github.com/pseudomuto/protokit v0.2.0 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
 	github.com/rjeczalik/notify v0.9.1 // indirect
 	github.com/sasha-s/go-deadlock v0.2.1-0.20190427202633-1595213edefa // indirect