Update dependency ts-jest to v26.4.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
ts-jest (source)	devDependencies	patch	26.4.2 -> 26.4.3

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Release Notes

kulshekhar/ts-jest

### [`v26.4.3`](https://togithub.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md#​2643-httpsgithubcomkulshekharts-jestcomparev2642v2643-2020-10-26) [Compare Source](https://togithub.com/kulshekhar/ts-jest/compare/v26.4.2...v26.4.3) ##### Bug Fixes - **compiler:** only exclude test files when initializing compiler ([#​2062](https://togithub.com/kulshekhar/ts-jest/issues/2062)) ([7264c13](https://togithub.com/kulshekhar/ts-jest/commit/7264c137114b6dd895624e3476dd7ec57b64ee13)), closes [#​2061](https://togithub.com/kulshekhar/ts-jest/issues/2061), [#​2068](https://togithub.com/kulshekhar/ts-jest/issues/2068), [#​2072](https://togithub.com/kulshekhar/ts-jest/issues/2072), [#​2073](https://togithub.com/kulshekhar/ts-jest/issues/2073) - **config:** resolve `.babelrc` file path before attempting to read it ([#​2071](https://togithub.com/kulshekhar/ts-jest/issues/2071)) ([681bfef](https://togithub.com/kulshekhar/ts-jest/commit/681bfef41744f09cd50b71072f4d001cb58da82e)), closes [#​2064](https://togithub.com/kulshekhar/ts-jest/issues/2064) ##### Features - **config:** allow to override resolve tsconfig behavior ([#​2063](https://togithub.com/kulshekhar/ts-jest/issues/2063)) ([9f46ace](https://togithub.com/kulshekhar/ts-jest/commit/9f46acefceb1fa71ee2e8b3b3c172ceb0544b4c4))

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