Bug#1135186: bookworm-pu: package tzdata/2026b-0+deb12u1

Package: release.debian.org
Severity: normal
Tags: bookworm
X-Debbugs-Cc: [email protected]
Control: affects -1 + src:tzdata
User: [email protected]
Usertags: pu

[ Reason ]
Three new upstream version of tzdata have been released since the last
update in bookwoorm:
- 2025c with a leap second update that has already been done
  through a patch in debian version 2025b-4+deb13u1
- 2026a with a fix for the transition time for Moldova, and an bump of
  the leap second list expiration date from 28 June 2026 to 28 December
  2026
- 2026b with a change for British Columbia which moved to permanent -07
  since 2026-03-08

[ Impact ]
The leap second file shipped in the version currently in bookworm will
expire on 28 June 2026. There is no leap second added at the end of June
so if this update is not accepted, the time will still be correct, but
NTP servers using this file usually emit warnings 28 days before the
expiration date.

[ Tests ]
There are no tests for this change.

[ Risks ]
The risk to import new upstream versions of tzdata are quite low, and is
done routinely. The changes from version 2025c and 2026a are already in
trixie since the 13.4 point release and the version 2026b is already in
testing and sid.

[ Checklist ]
  [x] *all* changes are documented in the d/changelog
  [x] I reviewed all changes and I approve them
  [ ] attach debdiff against the package in (old)stable
  [x] the issue is verified as fixed in unstable

[ Changes ]
The 2025c, 2026a and 2026b upstream version contains the following
changes to past and future timestamps:

Since 2022 Moldova has observed EU transition times, that is, it
has sprung forward at 03:00, not 02:00, and has fallen back at
04:00, not 03:00.

Baja California agreed with California’s DST rules in 1953 and in
1961 through 1975, instead of observing standard time all year.

British Columbia moved to permanent -07 on 2026-03-09.

[ Other info ]
Given version 2026a already got accepted in trixie and given the changes
in 2026b are small, I have just uploaded the package.