pgsql: Update time zone data files to tzdata release 2023c. - Mailing list pgsql-committers

Update time zone data files to tzdata release 2023c.

DST law changes in Egypt, Greenland, Morocco, and Palestine.

When observing Moscow time, Europe/Kirov and Europe/Volgograd now
use the abbreviations MSK/MSD instead of numeric abbreviations,
for consistency with other timezones observing Moscow time.

Also, America/Yellowknife is no longer distinct from America/Edmonton;
this affects some pre-1948 timestamps in that area.

Branch
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REL_12_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/2ad35cf06752f810d113cfd49eb9fba3f80a3491

Modified Files
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src/timezone/data/tzdata.zi    | 132 ++++++++++++++++++++++++++++++++---------
src/timezone/known_abbrevs.txt |   3 +-
2 files changed, 106 insertions(+), 29 deletions(-)