Fix: don't use the cache file when testing

[github-actions[bot]]

:test_tube: Branch testing instructions

This pull request can be tested locally with the following command:

npm exec --yes -- "github:emmercm/igir#emmercm/test-no-cache" [commands..] [options]

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 93.11%. Comparing base (967d2ed) to head (6db599c).

Files	Patch %	Lines
src/igir.ts	66.66%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1126 +/- ## ========================================== - Coverage 93.36% 93.11% -0.26% ========================================== Files 97 97 Lines 6283 6285 +2 Branches 1494 1497 +3 ========================================== - Hits 5866 5852 -14 + Misses 416 410 -6 - Partials 1 23 +22 ```

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[github-actions[bot]]

:lock: Inactive pull request lock

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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