git: c66f7aacfc78..971fa603f2bd - vendor/tzdata - vendor branch updated

From: Philip Paeps <philip_at_FreeBSD.org>
Date: Thu, 17 Mar 2022 03:29:43 UTC
The branch vendor/tzdata has been updated by philip:

URL: https://cgit.FreeBSD.org/src/log/?id=c66f7aacfc78..971fa603f2bd

971fa603f2bd Import tzdata 2022a