input: Write a function to sort a list of strings alphabetically and return the sorted list. The function should take a list of strings as input and return the sorted list.
  assert sort_strings(["Hello", "Yes", "No", "World"])==["Hello", "No", "World", "Yes"]
  assert sort_strings([])==[]
  assert sort_strings(["Apple", "Banana", "Orange"])==["Apple", "Banana", "Orange"]
  assert sort_strings(["Zebra", "Apple", "Banana"])==["Apple", "Banana", "Zebra"]
  assert sort_strings(["Python", "Java", "C++"])==["C++", "Java", "Python"]
output: def sort_strings(lst):
      return sorted(lst)