[action][create_keychain] remove all instances of `is_string` in options and use `type` (#18857)
[action][create_keychain] remove all instances of `is_string` in options and use `type` (#18857)


nafu/fastlane,KrauseFx/fastlane,fastlane/fastlane,fastlane/fastlane,nafu/fastlane,nafu/fastlane,lacostej/fastlane,KrauseFx/fastlane,icecrystal23/fastlane,icecrystal23/fastlane,lacostej/fastlane,lacostej/fastlane,fastlane/fastlane,icecrystal23/fastlane,bassrock/fastlane,icecrystal23/fastlane,nafu/fastlane,KrauseFx/fastlane,lacostej/fastlane,KrauseFx/fastlane,nafu/fastlane,fastlane/fastlane,bassrock/fastlane,icecrystal23/fastlane,bassrock/fastlane,lacostej/fastlane,bassrock/fastlane,KrauseFx/fastlane,bassrock/fastlane,fastlane/fastlane,KrauseFx/fastlane,KrauseFx/fastlane,nafu/fastlane,fastlane/fastlane,icecrystal23/fastlane,nafu/fastlane,bassrock/fastlane,lacostej/fastlane