input: Write a python function to check if two lists have any overlapping elements.
  assert has_overlapping([1, 3, 5, 7], [2, 4, 5, 7]) == True
  assert has_overlapping([1, 2, 3], [4, 5, 6]) == False
  assert has_overlapping([10, 20, 30], [30, 40, 50]) == True
  assert has_overlapping([10, 20, 30], [40, 50, 60]) == False
output: def has_overlapping(list1, list2):
      return bool(set(list1) & set(list2))