Roll Observatory packages and add a roll script

intl/lib/src/data/dates/symbols/ko.json

Index: intl/lib/src/data/dates/symbols/ko.json
diff --git a/intl/lib/src/data/dates/symbols/ko.json b/intl/lib/src/data/dates/symbols/ko.json
deleted file mode 100644
index 4f2217e391b001421cb5c0c5d3889fd7245d3902..0000000000000000000000000000000000000000
--- a/intl/lib/src/data/dates/symbols/ko.json
+++ /dev/null
@@ -1 +0,0 @@
-{"NAME":"ko","ERAS":["기원전","서기"],"ERANAMES":["서력기원전","서력기원"],"NARROWMONTHS":["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],"STANDALONENARROWMONTHS":["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],"MONTHS":["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],"STANDALONEMONTHS":["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],"SHORTMONTHS":["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],"STANDALONESHORTMONTHS":["1월","2월","3월","4월","5월","6월","7월","8월","9월","10월","11월","12월"],"WEEKDAYS":["일요일","월요일","화요일","수요일","목요일","금요일","토요일"],"STANDALONEWEEKDAYS":["일요일","월요일","화요일","수요일","목요일","금요일","토요일"],"SHORTWEEKDAYS":["일","월","화","수","목","금","토"],"STANDALONESHORTWEEKDAYS":["일","월","화","수","목","금","토"],"NARROWWEEKDAYS":["일","월","화","수","목","금","토"],"STANDALONENARROWWEEKDAYS":["일","월","화","수","목","금","토"],"SHORTQUARTERS":["1분기","2분기","3분기","4분기"],"QUARTERS":["제 1/4분기","제 2/4분기","제 3/4분기","제 4/4분기"],"AMPMS":["오전","오후"],"DATEFORMATS":["y년 M월 d일 EEEE","y년 M월 d일","y. M. d.","yy. M. d."],"TIMEFORMATS":["a h시 m분 s초 zzzz","a h시 m분 s초 z","a h:mm:ss","a h:mm"],"AVAILABLEFORMATS":null,"FIRSTDAYOFWEEK":6,"WEEKENDRANGE":[5,6],"FIRSTWEEKCUTOFFDAY":5,"DATETIMEFORMATS":["{1} {0}","{1} {0}","{1} {0}","{1} {0}"]}