input: Write a function to get the top 3 highest values from a dictionary.
  assert get_top_values({"a": 5, "b": 2, "c": 8, "d": 6}) == [8, 6, 5]
  assert get_top_values({"a": 1, "b": 2, "c": 3, "d": 4}) == [4, 3, 2]
  assert get_top_values({"a": 10, "b": 20, "c": 30, "d": 5, "e": 25}) == [30, 25, 20]
output: def get_top_values(d):
      return sorted(d.values(), reverse=True)[:3]