[snapshot] fix compiler error on SnapshotHelper.swift

[amcalgates]

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 see several green ci/circleci builds in the "All checks have passed" section of my PR (connect CircleCI to GitHub if not)
• I've read the Contribution Guidelines
• I've updated the documentation if necessary.

Motivation and Context

Additional fix for #18792
Resolves #18792

Description

I still see #18792 after updating. Running fastlane snapshot init seems to copy the file from snapshot/lib/assets/SnapshotHelper.swift which is different than the file that was modified in #18930

Testing Steps

Running fastlane snapshot init should cause snapshot/lib/assets/SnapshotHelper.swift to be copied to your project folder, and this version of the file is missing the try statement and does not compile.

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

[minuscorp]

But at some point this was broken with Swift 5.0, another if clause should be added to know when it was added the throws statement. Probably in the latest release with Swift 5.7

[minuscorp]

Read the comment above🙏

[rogerluan]

Thanks for looking into this @amcalgates ! Your solution makes total sense — I think the reproducibility instructions of #18792 were off 😬

Just left a comment!

[minuscorp]

LGTM

[rogerluan]

After the resolution of the pending discussions, this PR now LGTM! 🙌 Thanks again for this @amcalgates ! 🚀

[rogerluan]

@amcalgates could you rebase/merge master into your branch, please? Something went wrong with CI and it's not letting me re-trigger it

[amcalgates]

I've rebased + merged master. I'm not entirely sure what I'm supposed to be doing with CircleCI... presumably nothing? But I've played around with it for a bit and gotten nowhere. Let me know if there's anything I need to be doing.

[rogerluan]

Yeah you shouldn't need to do anything, no clue why your PR in particular isn't working though 🤔

[rogerluan]

It seems to be an issue on CircleCI's end, but no clue how to overcome it https://discuss.circleci.com/t/release-build-fails-because-deleted-the-circleci-oauth-app/45101/5

[joshdholtz]

Looks good to me! Thanks for this PR 😊

[fastlane-bot]

Congratulations! 🎉 This was released as part of fastlane 2.211.0 🚀