input: Write a python function to filter out strings that contain numbers.
  assert filter_numbers(["apple", "hello123", "hi12345", "good15"]) == ["apple"]
  assert filter_numbers(["test", "example1", "sample"]) == ["test", "sample"]
  assert filter_numbers(["123", "4567", "eight9", "ten"]) == ["ten"]
output: def filter_numbers(strings):
      return [s for s in strings if not any(char.isdigit() for char in s)]