Update Vitest, ESLint and plugins, adapt code

[flevi29]

Pull Request

What does this PR do?

• update ESLint and plugins and Vitest
• adapt code

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 99.17%. Comparing base (6ee223e) to head (d20f2dc).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1900   +/-   ##
=======================================
  Coverage   99.17%   99.17%           
=======================================
  Files          16       16           
  Lines        1574     1574           
  Branches      348      348           
=======================================
  Hits         1561     1561           
  Misses         13       13           

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