Bump github.com/nats-io/nats.go from 1.30.0 to 1.31.0 (#97)

Bumps [github.com/nats-io/nats.go](https://github.com/nats-io/nats.go) from 1.30.0 to 1.31.0.
- [Release notes](https://github.com/nats-io/nats.go/releases)
- [Commits](nats-io/nats.go@v1.30.0...v1.31.0)

---
updated-dependencies:
- dependency-name: github.com/nats-io/nats.go
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -7,21 +7,18 @@ require (
 	github.com/gorilla/websocket v1.5.0
 	github.com/iris-contrib/go.uuid v2.0.0+incompatible
 	github.com/mediocregopher/radix/v3 v3.8.1
-	github.com/nats-io/nats.go v1.30.0
+	github.com/nats-io/nats.go v1.31.0
 	golang.org/x/sync v0.4.0
 )
 
 require (
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/klauspost/compress v1.17.0 // indirect
-	github.com/nats-io/nats-server/v2 v2.9.11 // indirect
 	github.com/nats-io/nkeys v0.4.5 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
 	golang.org/x/crypto v0.6.0 // indirect
 	golang.org/x/sys v0.6.0 // indirect
 	golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 )