git: 7d227f6f7a5c..18b0e604df30 - vendor/tzdata - vendor branch updated

From: Philip Paeps <philip_at_FreeBSD.org>
Date: Mon, 02 Mar 2026 20:36:33 UTC
The branch vendor/tzdata has been updated by philip:

URL: https://cgit.FreeBSD.org/src/log/?id=7d227f6f7a5c..18b0e604df30

18b0e604df30 Import tzdata 2026a