Ci updates

[toasted-nutbread]

Resolves ##733 (comment).

Fixes an issue with the test data writing where it was missing an extra newline.

The standalone vitest config files were updated because it seems that the previous wildcard was being used relative to the root directory. So running npm run test:unit:options could actually end up invoking stuff outside of the project directory:

 ✓ ../yomitan-new/test/options-util.test.js (3)
 ✓ ../yomitan-old/test/options-util.test.js (3)
 ✓ ../yomichan/test/options-util.test.js (3)
 ✓ test/options-util.test.js (20)

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