Update dependency ts-jest to v25.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
ts-jest (source)	devDependencies	patch	25.2.0 -> 25.2.1

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Release Notes

kulshekhar/ts-jest

### [`v25.2.1`](https://togithub.com/kulshekhar/ts-jest/compare/v25.2.0...c8cb0023c3eb0ff1cb48db12572ac60ae0e6f643) [Compare Source](https://togithub.com/kulshekhar/ts-jest/compare/v25.2.0...c8cb0023c3eb0ff1cb48db12572ac60ae0e6f643)

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