Migrate from jest to vitest

[acelaya]

• https://cathalmacdonnacha.com/migrating-from-jest-to-vitest
• https://vitest.dev/guide/migration.html
• https://vitest.dev/config
• https://www.robinwieruch.de/vitest-react-testing-library/

Blocked by stryker-mutator/stryker-js#3465 No longer using Stryker

Pros 👍:

• Better support for TS
• Better support for ESM
• No need to keep mapping some dependencies to be able to import them from tests
• No longer mismatching behavior between web context and tests context
• Babel can be removed as a direct dependency, is it was required only by jest

Cons 👎:

• Tests take twice the time to run