input: Write a function to shuffle a list using random.shuffle.
  assert set(shuffle_list([1, 2, 3, 4, 5])) == set([1, 2, 3, 4, 5])
  assert set(shuffle_list([10, 20, 30, 40, 50])) == set([10, 20, 30, 40, 50])
  assert set(shuffle_list([5, 10, 15, 20, 25])) == set([5, 10, 15, 20, 25])
output: import random
  
  def shuffle_list(lst):
      random.shuffle(lst)
      return lst