Add aria labels for itinerary group summaries #5659

Job	Run time
file_changes	7s
Build application and assets	6m 1s
Build Docker image	6m 58s
Linting / Elixir	3m 47s
Formatting / Elixir	3m 20s
Formatting / JavaScript & TypeScript	26s
Linting / TypeScript	45s
Unit tests / JavaScript / Mocha	45s
Unit tests / JavaScript & TypeScript / Jest	2m 9s
Linting / JavaScript	21s
Linting / CSS	23s
Type checks / Elixir	4m 1s
Type checks / TypeScript	31s
Unit tests / Elixir / mix coveralls.html	57s
	30m 31s

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