[PATCH v2] libstdc++: Update tzdata to 2023d

[Jonathan Wakely]

On Sat, 13 Jan 2024 at 11:18, Jonathan Wakely wrote:
>
> On Fri, 12 Jan 2024 at 22:59, Jonathan Wakely wrote:
> >
> > It would be good to update the bundled tzdata for GCC 14.1 and 13.3
>
> The expiry date for the hardcoded leapseconds list should be updated
> too, as there's a new date in the file in the tzdata distro. There are
> no new leap seconds though, just a new "this list is valid until ..."
> date.
>
> Tested x86_64-linux and aarch64-linux.

Pushed to trunk. GCC 13 backport to follow.