Roll Observatory packages and add a roll script

intl/lib/src/data/dates/patterns/et.json

Index: intl/lib/src/data/dates/patterns/et.json
diff --git a/intl/lib/src/data/dates/patterns/et.json b/intl/lib/src/data/dates/patterns/et.json
deleted file mode 100644
index 5f5c6e7357e38f240a2c4c38664b5775adb75a86..0000000000000000000000000000000000000000
--- a/intl/lib/src/data/dates/patterns/et.json
+++ /dev/null
@@ -1 +0,0 @@
-{"d":"d","E":"EEE","EEEE":"EEEE","LLL":"MMMM","LLLL":"MMMM","M":"M","Md":"d.M","MEd":"EEE, d.M","MMM":"MMMM","MMMd":"d. MMM","MMMEd":"EEE, d. MMM","MMMM":"MMMM","MMMMd":"d. MMMM","MMMMEEEEd":"EEEE, d. MMMM","QQQ":"QQQ","QQQQ":"QQQQ","y":"y","yM":"M.y","yMd":"d.M.y","yMEd":"EEE, d.M y","yMMM":"MMM y","yMMMd":"d. MMM y","yMMMEd":"EEE, d. MMMM y","yMMMM":"MMMM y","yMMMMd":"d. MMMM y","yMMMMEEEEd":"EEEE, d. MMMM y","yQQQ":"QQQ y","yQQQQ":"QQQQ y","H":"HH","Hm":"HH:mm","Hms":"H:mm.ss","j":"HH","jm":"HH:mm","jms":"H:mm.ss","jmv":"HH:mm v","jmz":"HH:mm z","jz":"HH z","m":"m","ms":"mm.ss","s":"s","v":"v","z":"z","zzzz":"zzzz","ZZZZ":"ZZZZ"}