input: Write a function to sort a list of strings alphabetically. The sorted list should be returned and printed.
  assert sort_strings(["Hello", "Yes", "No", "World"]) == ["Hello", "No", "World", "Yes"]
  assert sort_strings(["apple", "banana", "cherry"]) == ["apple", "banana", "cherry"]
  assert sort_strings([]) == []
  assert sort_strings(["z", "a", "m"]) == ["a", "m", "z"]
output: def sort_strings(lst):
      return sorted(lst)