input: Write a python function to find the minimum and maximum values from a list of numbers.
  assert minmax([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) == {'min': 1, 'max': 10}
  assert minmax([10, 20, 45, 67, 84, 93]) == {'min': 10, 'max': 93}
  assert minmax([5, 7, 9, 8, 6, 4, 3]) == {'min': 3, 'max': 9}
output: def minmax(numbers):
      return {'min': min(numbers), 'max': max(numbers)}