Add tracking for Cost of living accordion sections
Add tracking for Cost of living accordion sections

As per documentation: https://github.com/alphagov/govuk_publishing_components/blob/9f664d4/app/views/govuk_publishing_components/components/docs/accordion.yml#L346-L368

The accordion_contents already have `data_attributes` defined:
https://github.com/alphagov/collections/blob/b7ea085/app/views/cost_of_living_landing_page/show.html.erb#L20-L24

alphagov/collections,alphagov/collections,alphagov/collections,alphagov/collections