git: 2479b6921a20..4d4fdb78dbcb - vendor/tzcode - vendor branch updated

From: Dag-Erling Smørgrav <des_at_FreeBSD.org>
Date: Sun, 13 Sep 2026 13:19:25 UTC
The branch vendor/tzcode has been updated by des:

URL: https://cgit.FreeBSD.org/src/log/?id=2479b6921a20..4d4fdb78dbcb

4d4fdb78dbcb Import tzcode 2026d