API should use UTC

Changes.md

@@ -2,6 +2,8 @@
 -----------
 
 - Fix more race conditions in Web UI actions
+- Don't reset Job enqueued\_at when retrying
+- Timestamp tooltips in the Web UI should use UTC
 
 
 2.13.1

lib/sidekiq/api.rb

@@ -175,7 +175,7 @@ module Sidekiq
     end
 
     def enqueued_at
-      Time.at(@item['enqueued_at'] || 0)
+      Time.at(@item['enqueued_at'] || 0).utc
     end
 
     def queue
@@ -210,7 +210,7 @@ module Sidekiq
     end
 
     def at
-      Time.at(score)
+      Time.at(score).utc
     end
 
     def delete