Fix mocked warning from ts-jest

[jo-sm]

This PR upgrades jest and ts-jest to latest, and uses jest.mocked instead of mocked from ts-jest/utils based on this warning coming from ts-jest:

mocked util function is now deprecated and has been moved to Jest repository, see jestjs/jest#12089. In ts-jest v28.0.0, mocked function will be completely removed. Users are encouraged to use to Jest v27.4.0 or above to have mocked function available from jest-mock. One can disable this warning by setting environment variable process.env.DISABLE_MOCKED_WARNING=true