Roll Observatory packages and add a roll script

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

Index: intl/lib/src/data/dates/patterns/el.json
diff --git a/intl/lib/src/data/dates/patterns/el.json b/intl/lib/src/data/dates/patterns/el.json
deleted file mode 100644
index 0dc654c3a3a1b37dcb5b07d9eb8fe55e698f31b5..0000000000000000000000000000000000000000
--- a/intl/lib/src/data/dates/patterns/el.json
+++ /dev/null
@@ -1 +0,0 @@
-{"d":"d","E":"EEE","EEEE":"EEEE","LLL":"LLL","LLLL":"LLLL","M":"L","Md":"d/M","MEd":"EEE, d/M","MMM":"LLL","MMMd":"d MMM","MMMEd":"EEE, d MMM","MMMM":"LLLL","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":"LLL y","yMMMd":"d MMM y","yMMMEd":"EEE, d MMM y","yMMMM":"LLLL y","yMMMMd":"d MMMM y","yMMMMEEEEd":"EEEE, d MMMM y","yQQQ":"y QQQ","yQQQQ":"y QQQQ","H":"HH","Hm":"HH:mm","Hms":"HH:mm:ss","j":"h a","jm":"h:mm a","jms":"h:mm:ss a","jmv":"h:mm a v","jmz":"h:mm a z","jz":"h a z","m":"m","ms":"mm:ss","s":"s","v":"v","z":"z","zzzz":"zzzz","ZZZZ":"ZZZZ"}