Appveyor: Update all ruby dependencies, because appveyors installation is too old.
Appveyor: Update all ruby dependencies, because appveyors installation is too old.

larskanis/rubyinstaller2,larskanis/rubyinstaller2,oneclick/rubyinstaller2,larskanis/rubyinstaller2,oneclick/rubyinstaller2,oneclick/rubyinstaller2