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(["apple", "banana", "cherry"]) == ["apple", "banana", "cherry"]
  assert sort_strings(["zebra", "apple", "melon", "banana"]) == ["apple", "banana", "melon", "zebra"]
  assert sort_strings([]) == []
output: def sort_strings(lst):
      return sorted(lst)