git: b17ccc1f4591..2479b6921a20 - vendor/tzcode - vendor branch updated

[Dag-Erling Smørgrav]

The branch vendor/tzcode has been updated by des:

URL: https://cgit.FreeBSD.org/src/log/?id=b17ccc1f4591..2479b6921a20

2479b6921a20 Import tzcode 2026c