Swagger UI is out of date (version 3 is latest)

[magento-engcom-team]

Preconditions

1. Magento 2.x

Steps to reproduce

1. Open /swagger route using browser

Expected result

1. Swagger UI is using version 3

Actual result

1. Swagger UI is using version 2

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Is there any plans to upgrade swagger UI, or anything blocking this currently? See comment here: magento/magento2#7446 (comment)