4.31.1

RevenueCatUI

• Paywalls: remove empty space when template 4 has no offer details (#3469) via NachoSoto (@NachoSoto)

Other Changes

• Concurrency: address strict concurrency issues on SystemInfo (#3462) via NachoSoto (@NachoSoto)
• CircleCI: upgrade to Xcode 15.1 (#3403) via NachoSoto (@NachoSoto)
• Paywalls: tests for PurchaseButton layout logic (#3468) via NachoSoto (@NachoSoto)
• Paywalls: simplified PaywallViewMode logic (#3470) via NachoSoto (@NachoSoto)