input: Write a python function to replace each vowel in a string with the next vowel in the sequence 'aeiou'.
  assert edit_vowels("hello") == "hillu"
  assert edit_vowels("programming") == "prugremmeng"
  assert edit_vowels("abcdefghijklmnopqrstuvwxyz") == "ebcdifghijklmnoupqrstivwxyz"
output: def edit_vowels(s: str) -> str:
      vowels = 'aeiou'
      next_vowel = {'a': 'e', 'e': 'i', 'i': 'o', 'o': 'u', 'u': 'a'}
      
      result = []
      for char in s:
          if char in vowels:
              result.append(next_vowel[char])
          else:
              result.append(char)
      
      return ''.join(result)