Improvements

* [Spaceship] Ability to use existing IAP screenshots (#10903) via Kevin Cornbower

* Update "you can do this" label search URL (#11102) via James Sherlock

* Revert changes to signingStyle, fixes #11073 (#11100) via Manu Wallner

* [docs] link to CONTRIBUTING from YourFirstPR (#11103) via Jan Piotrowski

* [appium] Support appium android (#11063) via Yusuke Hosonuma

* Update the anchor in Circle.md (#11075) via Alexey

https://github.com/fastlane/fastlane/releases/tag/2.68.1
