Merge branch 'add-bucket-to-gitlab-sql-duration-seconds-histogram' into 'master'

Add bucket to gitlab_sql_duration_seconds

See merge request gitlab-org/gitlab!39206

lib/gitlab/metrics/subscribers/active_record.rb

@@ -22,7 +22,7 @@ module Gitlab
           return if payload[:name] == 'SCHEMA' || IGNORABLE_SQL.include?(payload[:sql])
 
           current_transaction.observe(:gitlab_sql_duration_seconds, event.duration / 1000.0) do
-            buckets [0.05, 0.1]
+            buckets [0.05, 0.1, 0.25]
           end
 
           increment_db_counters(payload)