timezone data: update to 2023d

Update timezone data to 2023d.

https://mm.icann.org/pipermail/tz-announce/2023-December/000080.html

Summary:
* Ittoqqortoormiit, Greenland changes time zones on 2024-03-31.
* Vostok, Antarctica changed time zones on 2023-12-18.
* Casey, Antarctica changed time zones five times since 2020.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

modules/luci-base/ucode/zoneinfo.uc

@@ -178,7 +178,7 @@ export default {
 	'America/Santiago': '<-04>4<-03>,M9.1.6/24,M4.1.6/24',
 	'America/Santo Domingo': 'AST4',
 	'America/Sao Paulo': '<-03>3',
-	'America/Scoresbysund': '<-01>1<+00>,M3.5.0/0,M10.5.0/1',
+	'America/Scoresbysund': '<-02>2<-01>,M3.5.0/-1,M10.5.0/0',
 	'America/Sitka': 'AKST9AKDT,M3.2.0,M11.1.0',
 	'America/St Barthelemy': 'AST4',
 	'America/St Johns': 'NST3:30NDT,M3.2.0,M11.1.0',
@@ -196,7 +196,7 @@ export default {
 	'America/Whitehorse': 'MST7',
 	'America/Winnipeg': 'CST6CDT,M3.2.0,M11.1.0',
 	'America/Yakutat': 'AKST9AKDT,M3.2.0,M11.1.0',
-	'Antarctica/Casey': '<+11>-11',
+	'Antarctica/Casey': '<+08>-8',
 	'Antarctica/Davis': '<+07>-7',
 	'Antarctica/DumontDUrville': '<+10>-10',
 	'Antarctica/Macquarie': 'AEST-10AEDT,M10.1.0,M4.1.0/3',
@@ -206,7 +206,7 @@ export default {
 	'Antarctica/Rothera': '<-03>3',
 	'Antarctica/Syowa': '<+03>-3',
 	'Antarctica/Troll': '<+00>0<+02>-2,M3.5.0/1,M10.5.0/3',
-	'Antarctica/Vostok': '<+06>-6',
+	'Antarctica/Vostok': '<+05>-5',
 	'Arctic/Longyearbyen': 'CET-1CEST,M3.5.0,M10.5.0/3',
 	'Asia/Aden': '<+03>-3',
 	'Asia/Almaty': '<+06>-6',