Update module go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc to v0.56.0

This MR contains the following updates:

Package	Type	Update	Change
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc	require	minor	v0.53.0 -> v0.56.0

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