Is your proposal related to a problem?

The more tests the slower jest runs.

Describe the solution you'd like

Upgrade to jest v28 so sharding will be available.

Describe alternatives you've considered

I don't have an alternative in mind.

Additional context

Some links

https://medium.com/@mfreundlich1/speed-up-your-jest-tests-with-shards-776e9f02f637
https://jestjs.io/blog/2022/04/25/jest-28