Optimize stats threshold for approximate counters

lib/gitlab/database/count/reltuples_count_strategy.rb

@@ -72,7 +72,7 @@ module Gitlab
         # @param [Array] table names
         # @returns [Hash] Table name to count mapping (e.g. { 'projects' => 5, 'users' => 100 })
         def get_statistics(table_names, check_statistics: true)
-          time = 1.hour.ago
+          time = 6.hours.ago
 
           query = PgClass.joins("LEFT JOIN pg_stat_user_tables USING (relname)")
             .where(relname: table_names)