[tz] Error for Chile on September 2023

[Guy Harris]

On Nov 6, 2023, at 2:16 PM, Doug Ewell via tz <tz at iana.org> wrote:

> Both the table on the linked page and the PDF that can be downloaded from it stop at 2021.
> The Supreme Decree which is linked from the “Cambio de Horas” tab says:
> 
> 2. Starting at midnight on the first Saturday of the month of September 2023 and until midnight on the first Saturday of the month of April 2024, the official time will be advanced by 60 minutes.

Presumably meaning "Starting at midnight at the end of the first Saturday of the month of September 2023", as the last Rule entry for Chile is

	Rule    Chile   2023    max     -       Sep     Sun>=2  4:00u   1:00    -