style: apply prettier to all files in the repo

[ripecosta]

Description

Updates the Prettier config so it runs on all (supported) files in the repo rather than just the ones it was explicitly configured to run on (.ts, .tsx, .mts, .js, .json and .md)

Checklist

• only relevant code is changed (make a diff before you submit the PR)
• run tests npm run test
• tests are included
• commit message and code follows the Developer's Certification of Origin

[coveralls]

coverage: 97.174%. remained the same
when pulling fd9acb7 on ripecosta:rc/prettier
into ff42302 on i18next:master.