Bumps ts-jest](https://github.com/kulshekhar/ts-jest)) from 25.5.1 to 26.5.4. - Release notes](https://github.com/kulshekhar/ts-jest/releases)) - Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)) - Commits](https://github.com/kulshekhar/ts-jest/compare/v25.5.1...v26.5.4))
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