input: Write a python function to calculate the standard deviation of a list using the statistics library.
  assert calculate_std_dev([1, 2, 3, 4, 5]) == 1.5811388300841898
  assert calculate_std_dev([10, 12, 23, 23, 16, 23, 21, 16]) == 4.898979485566356
  assert calculate_std_dev([5, 10, 15, 20, 25, 30]) == 8.660254037844387
output: def calculate_std_dev(numbers):
      import statistics
      return statistics.stdev(numbers)