build(deps): bump golang.org/x/sync from 0.1.0 to 0.4.0

Bumps [golang.org/x/sync](https://github.com/golang/sync) from 0.1.0 to 0.4.0.
- [Commits](golang/sync@v0.1.0...v0.4.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sync
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/stretchr/testify v1.8.2
 	github.com/tendermint/tendermint v0.34.28
 	go.uber.org/zap v1.23.0
-	golang.org/x/sync v0.1.0
+	golang.org/x/sync v0.4.0
 	google.golang.org/grpc v1.54.0
 )