input: Write a python function to combine the values of dictionaries in a list into a single dictionary.
  assert combine_dicts([{'a': 'b', 'c'}, {'d': 'e', 'f': 'g'}, {'h': 'i', 'j' : 'k'}, {'l': 'm'}])=={'a': 'b', 'd': 'e', 'f': 'g', 'h': 'i', 'j': 'k', 'l': 'm'}
  assert combine_dicts([{'x': 'y'}, {'z': 'w'}])=={'x': 'y', 'z': 'w'}
  assert combine_dicts([{'one': 1}, {'two': 2, 'three': 3}, {'four': 4}])=={'one': 1, 'two': 2, 'three': 3, 'four': 4}
output: def combine_dicts(dicts):
      combined = {}
      for d in dicts:
          combined.update(d)
      return combined