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

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.56.0 to 1.65.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.56.0...v1.65.0)

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

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

examples/demo/server/go.mod

@@ -12,25 +12,24 @@ require (
 	go.opentelemetry.io/otel/sdk v1.16.0
 	go.opentelemetry.io/otel/sdk/metric v0.39.0
 	go.opentelemetry.io/otel/trace v1.16.0
-	google.golang.org/grpc v1.56.0
+	google.golang.org/grpc v1.65.0
 )
 
 require (
 	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
 	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/go-logr/logr v1.2.4 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.16.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlpmetric v0.39.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
-	golang.org/x/net v0.11.0 // indirect
-	golang.org/x/sys v0.9.0 // indirect
-	golang.org/x/text v0.10.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20230530153820-e85fd2cbaebc // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20230530153820-e85fd2cbaebc // indirect
-	google.golang.org/protobuf v1.30.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240528184218-531527333157 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240528184218-531527333157 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
 )
 
 retract (