feat(jest): bump jest to 29 in the template (#34972)
feat(jest): bump jest to 29 in the template (#34972)

Summary:
This PR is the follow up of https://github.com/facebook/react-native/pull/34724 for the template; this way, we'll have version alignment and RN71 will use this.

This wants to be merged along https://github.com/facebook/react-native/pull/34971

## Changelog

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[General] [Changed] - upgrade Jest in template to 29

Pull Request resolved: https://github.com/facebook/react-native/pull/34972

Test Plan: Generated a test project via `yarn test-e2e-local -t RNTestProject` and then run `yarn test` in that project to verify that there's no regression. ✅

Reviewed By: huntie

Differential Revision: D40379963

Pulled By: robhogan

fbshipit-source-id: 618207ed6bf7921d13f0b6a9220dc52c9cf78b14

facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native,facebook/react-native