pgsql: Update time zone data files to tzdata release 2026c.

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Update time zone data files to tzdata release 2026c.
Date: 2026-08-02 15:26:51
Message-ID: E1wqY5T-00000001Mv4-0HiM@gemulon.postgresql.org
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Update time zone data files to tzdata release 2026c.

Alberta (America/Edmonton) moved to permanent UTC-06 on
2026-06-18, which will affect their clocks beginning on 2026-11-01.
For lack of any clarity on the point, assume their TZ abbreviation
will be CST from that time forward.

Morocco (Africa/Casablanca) will move to permanent UTC+00,
without daylight saving time transitions, on 2026-09-20.

Backpatch-through: 14

Branch
------
REL_16_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/796c275a018b778b0ff5b82a2eff87d7d75e6a7d

Modified Files
--------------
src/timezone/data/tzdata.zi | 138 +++-----------------------------------------
1 file changed, 8 insertions(+), 130 deletions(-)

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