Update instrumentation/sidekiq/lib/opentelemetry/instrumentation/sidekiq/middlewares/server/tracer_middleware.rb

Co-authored-by: Troels Thomsen <[email protected]>

Author: dmathieu

instrumentation/sidekiq/lib/opentelemetry/instrumentation/sidekiq/middlewares/server/tracer_middleware.rb

@@ -75,7 +75,7 @@ def time_from_timestamp(timestamp)
                 # old format, timestamps were stored as fractional seconds since the epoch
                 timestamp
               else
-                timestamp / 1000
+                timestamp / 1000r
               end
             end
           end