Update jstz.js
Update jstz.js

The timezone from Russia has been set to UTC+3 permanently on 26 October 2014.  This PR updates that

More info on the time-zone update:  https://en.wikipedia.org/wiki/Moscow_Time

> Moscow Time (Russian: Моско́вское вре́мя) is the time zone for the city of Moscow, Russia, and most of western Russia, including Saint Petersburg. It is the second-westernmost of the nine time zones of Russia. It has been set to UTC+3 permanently on 26 October 2014;[1] before that date it had been set to UTC+4 year-round since 27 March 2011.[2]
HenningM/jstimezonedetect,HenningM/jstimezonedetect,HenningM/jstimezonedetect