Update Vite and Vitest

[flevi29]

Pull Request

What does this PR do?

• updates Vite and Vitest to latest version
• changes TypeScript config so that it can handle JSON as well with import assertions
• changes Vite config so that it can be type checked and compatible with latest Vitest

PR checklist

Please check if your PR fulfills the following requirements:

• Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• Have you read the contributing guidelines?
• Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.84%. Comparing base (1064d09) to head (c80a133).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1847      +/-   ##
==========================================
- Coverage   98.84%   98.84%   -0.01%     
==========================================
  Files          17       17              
  Lines        1565     1559       -6     
  Branches      338      338              
==========================================
- Hits         1547     1541       -6     
  Misses         18       18              

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[Strift]

Isn't this going to affect the build?

[flevi29]

https://www.typescriptlang.org/docs/handbook/modules/reference.html#node16-nodenext

node16 and nodenext are currently identical, with the exception that they imply different target option values. If Node.js makes significant changes to its module system in the future, node16 will be frozen while nodenext will be updated to reflect the new behavior.

However our target is set, so it doesn't affect the exception. nodenext is required for importing and resolving JSON with TypeScript. In the future node18 will be available, and we'll switch to that.