[snapshot] Allow iPods to run alongside iPhone and iPad

[mdubs]

Checklist

• I've run bundle exec rspec from the root directory to see all new and existing tests pass
• I've followed the fastlane code style and run bundle exec rubocop -a to ensure the code style is valid
• I've read the Contribution Guidelines
• I've updated the documentation if necessary.

Motivation and Context

Resolves #18842
Allows iPod touch device to run snapshot in parallel with iPhone and iPad devices

Description

This allows the device to start with ipod as well as iphone and iPad as they are all I(Pad)OS devices. I added unit tests for having iPods in conjunction with other device types

Testing Steps

Ran the full test suite for fastlane as well as ran my screenshots using the changed fastlane using iPod touch 7th Gen and iPhone 12 simulators

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[mdubs]

@googlebot I signed it!

[joshdholtz]

🤯 I am really surprised this wasn’t in here already! Thank you so much for adding this in ❤️

[fastlane-bot]

Hey @mdubs 👋

Thank you for your contribution to fastlane and congrats on getting this pull request merged 🎉
The code change now lives in the master branch, however it wasn't released to RubyGems yet.
We usually ship about once a week, and your PR will be included in the next one.

Please let us know if this change requires an immediate release by adding a comment here 👍
We'll notify you once we shipped a new release with your changes 🚀

[fastlane-bot]

Congratulations! 🎉 This was released as part of fastlane 2.185.1 🚀