Fix GitHub Actions CI

[mikaelacaron]

Describe the bug

The GitHub Actions CI for running the unit tests (using fastlane), and deploying the DocC documentation are broken.

Files can be found in .github/workflows the unit-tests.yml and docc.yml files are not passing.

Previously, I added SwiftLint as an Xcode Plugin, and I think that's what broken the CI. Previously I tried to fix this around the time of SwiftLeeds last year, and it worked, but now something else broke again. (You can maybe try to find the actions that passed, and what fixed those, and then later how they broke again.

To Reproduce

• Run the actions on your fork, and the "unit test" action and the "deploy documentation" both fail

Expected behavior

All GitHub Actions pass

Screenshots

N/A

Additional Context

• Issue reserved for @mattheaney23
• This is the SwiftLint Plugin https://github.com/SimplyDanny/SwiftLintPlugins
  • If you have another idea for a better way to run SwiftLint, let me know!

[MattHeaney23]

I'm happy to be assigned this one! 😁

[mikaelacaron]

This part of the SwiftLint docs may help https://github.com/realm/SwiftLint?tab=readme-ov-file#xcode-projects