Fix uses of $Aggregation on the Sidekiq Grafana dashboard
Fix uses of $Aggregation on the Sidekiq Grafana dashboard

This template variable was renamed to $Interval at some point.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet