REFACTOR: Migrate TV series tests to Swift Testing

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Please upload report for BASE (main@3bb497a). Learn more about missing BASE report. Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #207 +/- ## ======================================= Coverage ? 89.40% ======================================= Files ? 204 Lines ? 2860 Branches ? 0 ======================================= Hits ? 2557 Misses ? 303 Partials ? 0 ```

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