Update ruby command handling in related steps

[godreikrisztian]

Previous fastlane issue highlighted, that we need to update steps, which uses ruby command, to use our shared rubycommand package.

Related steps:

• https://github.com/bitrise-io/steps-cocoapods-install
• https://github.com/bitrise-io/steps-deploy-to-itunesconnect-deliver
• https://github.com/bitrise-steplib/steps-calabash-android-uitest
• https://github.com/bitrise-steplib/steps-calabash-ios-uitest

[godreikrisztian]

deploy-to-itunesconnect-deliver 2.8.1 shared

[godreikrisztian]

cocoapods-install 1.6.1 shared