Bump google.golang.org/grpc in /examples/demo/client

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.45.0 to 1.46.2.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.45.0...v1.46.2)

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

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

examples/demo/client/go.mod

@@ -12,7 +12,7 @@ require (
 	go.opentelemetry.io/otel/metric v0.27.0
 	go.opentelemetry.io/otel/sdk v1.4.1
 	go.opentelemetry.io/otel/sdk/metric v0.27.0
-	google.golang.org/grpc v1.45.0
+	google.golang.org/grpc v1.46.2
 )
 
 require (