otelgrpc DoS vulnerability due to unbound cardinality metrics

Summary The grpc Unary Server Interceptor opentelemetry-go-contrib/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go // UnaryServerInterceptor returns a grpc.UnaryServerInterceptor suitable // for use in a grpc.NewServer call. func UnaryServerInterceptoropts ...Option...