chore(deps): bump google.golang.org/grpc from 1.53.0 to 1.56.3 in /ex…

…amples/tracetest-synthetic-monitoring (#3304)

chore(deps): bump google.golang.org/grpc

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.53.0 to 1.56.3.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.53.0...v1.56.3)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
...

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

examples/tracetest-synthetic-monitoring/go.mod

@@ -9,5 +9,5 @@ require (
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.11.2
 	go.opentelemetry.io/otel/sdk v1.11.2
 	go.opentelemetry.io/otel/trace v1.11.2
-	google.golang.org/grpc v1.53.0
+	google.golang.org/grpc v1.56.3
 )