Improvements

* [increment_build_number] Fix issue when incrementing versions and specifying a `xcodeproj` value (#9508) via Hawken Rives
* [supply] Mask json_key_data in summary table (#9507) via Stanislav Shakirov
* [snapshot] Show message that Xcode 9 isn't supported yet (#9468) via Felix Krause

https://github.com/fastlane/fastlane/releases/tag/2.39.2
