build(deps-dev): bump ts-jest from 26.5.2 to 26.5.5 (#659)

Bumps [ts-jest](https://github.com/kulshekhar/ts-jest) from 26.5.2 to 26.5.5.
- [Release notes](https://github.com/kulshekhar/ts-jest/releases)
- [Changelog](https://github.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md)
- [Commits](kulshekhar/ts-jest@v26.5.2...v26.5.5)

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Author: dependabot[bot]