With the new update of Tzinfo gem the new tzdata is updated. In which the Moscow day light saving reflects.
So i am using a timezone where no day-light saving.
Fixes tests for time_zone_test.rb with new tzinfo gem.
I will get pull requests for 3-0-stable also once this gets merged.
Using not effected timezone in tests.
Thanks for the work @arunagw. I've already cherry picked the commit to the other branches.