Upgrade gems to support Redis 4.2
What does this MR do?
This prepares us for upgrading the redis-rb gem to 4.2+ which is required for Sidekiq 6
Related to #329430 (closed)
Upgrades
-
redis-store
-
redis-rack
-
rails-html-sanitizer
-
loofah
rails-html-sanitizer
and loofah
aren't absolutely necessary but I left them in since they are tiny changes.
Edited by Heinrich Lee Yu