Error 500 viewing admin page due to statement timeout on counting total notes

https://sentry.gitlap.com/gitlab/gitlabcom/issues/193702/

PG::QueryCanceled: ERROR:  canceling statement due to statement timeout

  peek/views/pg.rb:17:in `async_exec'
    super(*args)
  peek/views/pg.rb:17:in `async_exec'
    super(*args)
  active_record/connection_adapters/postgresql_adapter.rb:592:in `block in exec_no_cache'
    log(sql, name, binds) { @connection.async_exec(sql, []) }
  active_record/connection_adapters/abstract_adapter.rb:484:in `block in log'
    :binds          => binds) { yield }
  active_support/notifications/instrumenter.rb:20:in `instrument'
    yield payload
...
(182 additional frame(s) were not displayed)

ActiveRecord::StatementInvalid: PG::QueryCanceled: ERROR:  canceling statement due to statement timeout
: SELECT COUNT(*) FROM "notes"
ActionView::Template::Error: PG::QueryCanceled: ERROR:  canceling statement due to statement timeout
: SELECT COUNT(*) FROM "notes"

ActionView::Template::Error: PG::QueryCanceled: ERROR:  canceling statement due to statement timeout
: SELECT COUNT(*) FROM "notes"