Upgrade to release 2026.4:
- Canada's Northwest Territories moved to permanent -06 on
2026-08-21.
- Obsolescent settings like TZ="EST5EDT" now conform better to
POSIX.
- Fix security, performance and porting bugs in zic and localtime.
This work was sponsored by GOVCERT.LU.
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
