Update zoneinfo files to 2025b

This updates Asia/Tehran, and creates America/Coyhaique.
Add America/Coyhaique to the "kTimeZoneNames" test lists.

Also remove America/Godthab from those test lists as it
was converted to a backwards-compatibility link in 2020a,
and so may no longer appear in tzdata releases.

Author: devbww

src/cctz_benchmark.cc

@@ -198,6 +198,7 @@ const char* const kTimeZoneNames[] = {
   "America/Ciudad_Juarez",
   "America/Coral_Harbour",
   "America/Costa_Rica",
+  "America/Coyhaique",
   "America/Creston",
   "America/Cuiaba",
   "America/Curacao",
@@ -214,7 +215,6 @@ const char* const kTimeZoneNames[] = {
   "America/Fort_Nelson",
   "America/Fortaleza",
   "America/Glace_Bay",
-  "America/Godthab",
   "America/Goose_Bay",
   "America/Grand_Turk",
   "America/Grenada",

src/time_zone_lookup_test.cc

@@ -131,6 +131,7 @@ const char* const kTimeZoneNames[] = {
   "America/Ciudad_Juarez",
   "America/Coral_Harbour",
   "America/Costa_Rica",
+  "America/Coyhaique",
   "America/Creston",
   "America/Cuiaba",
   "America/Curacao",
@@ -147,7 +148,6 @@ const char* const kTimeZoneNames[] = {
   "America/Fort_Nelson",
   "America/Fortaleza",
   "America/Glace_Bay",
-  "America/Godthab",
   "America/Goose_Bay",
   "America/Grand_Turk",
   "America/Grenada",

testdata/version

@@ -1 +1 @@
-2025a
+2025b

testdata/zoneinfo/America/Coyhaique

@@ -124,7 +124,8 @@ CH,DE,LI	+4723+00832	Europe/Zurich	Büsingen
 CI,BF,GH,GM,GN,IS,ML,MR,SH,SL,SN,TG	+0519-00402	Africa/Abidjan
 CK	-2114-15946	Pacific/Rarotonga
 CL	-3327-07040	America/Santiago	most of Chile
-CL	-5309-07055	America/Punta_Arenas	Region of Magallanes
+CL	-4534-07204	America/Coyhaique	Aysén Region
+CL	-5309-07055	America/Punta_Arenas	Magallanes Region
 CL	-2709-10926	Pacific/Easter	Easter Island
 CN	+3114+12128	Asia/Shanghai	Beijing Time
 CN	+4348+08735	Asia/Urumqi	Xinjiang Time

testdata/zoneinfo/Asia/Tehran

@@ -104,7 +104,7 @@ XX	+4439-06336	America/Halifax	Atlantic ("AST/ADT") - Canada; Bermuda
 XX	+4734-05243	America/St_Johns	Newfoundland ("NST/NDT")
 #
 # -03
-XX	-2332-04637	America/Sao_Paulo	eastern South America
+XX	-2332-04637	America/Sao_Paulo	eastern and southern South America
 #
 # -03/-02 (North America DST)
 XX	+4703-05620	America/Miquelon	St Pierre & Miquelon