4.17.9

Bugfixes

• DeviceCache: workaround for potential deadlock (#2375)

Performance Improvements

• PostReceiptDataOperation / GetCustomerInfoOperation: only invoke response handlers once (#2377) via NachoSoto (@NachoSoto)

Other Changes

• Redirect to latest version of migration guide (#2384)
• Fix migration guide link (#2383)
• SwiftLint: fixed lint with new 0.51.0 version (#2395)