Upgrade to latest redis-rb 4.x and fix deprecations (#23616)

Co-authored-by: Jean Boussier <jean.boussier@gmail.com>

app/models/follow_recommendation_suppression.rb

@@ -20,9 +20,9 @@ class FollowRecommendationSuppression < ApplicationRecord
   private
 
   def remove_follow_recommendations
-    redis.pipelined do
+    redis.pipelined do |pipeline|
       I18n.available_locales.each do |locale|
-        redis.zrem("follow_recommendations:#{locale}", account_id)
+        pipeline.zrem("follow_recommendations:#{locale}", account_id)
       end
     end
   end