chore(deps): update dependency ts-jest to v26

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
ts-jest (source)	devDependencies	major	^25.5.1 -> ^26.0.0

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Release Notes

kulshekhar/ts-jest

### [`v26.1.0`](https://togithub.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md#​2610-httpsgithubcomkulshekharts-jestcomparev2600v2610-2020-05-30) [Compare Source](https://togithub.com/kulshekhar/ts-jest/compare/v26.0.0...v26.1.0) ##### Bug Fixes - **typing:** don't mark `BabelConfig` as internal type ([#​1667](https://togithub.com/kulshekhar/ts-jest/issues/1667)) ([558c307](https://togithub.com/kulshekhar/ts-jest/commit/558c307)), closes [#​1666](https://togithub.com/kulshekhar/ts-jest/issues/1666) ##### Features - **config:** show a warning message when TypeScript `target` version doesn't match with recommended NodeJs version ([#​1678](https://togithub.com/kulshekhar/ts-jest/issues/1678)) ([085bdf5](https://togithub.com/kulshekhar/ts-jest/commit/085bdf5)) - **config:** support multiple paths for `pathsToModuleNameMapper` ([#​1690](https://togithub.com/kulshekhar/ts-jest/issues/1690)) ([a727bd5](https://togithub.com/kulshekhar/ts-jest/commit/a727bd5)) - support TypeScript 3.9 ([#​1653](https://togithub.com/kulshekhar/ts-jest/issues/1653)) ([fc3d5ad](https://togithub.com/kulshekhar/ts-jest/commit/fc3d5ad)) ### [`v26.0.0`](https://togithub.com/kulshekhar/ts-jest/blob/master/CHANGELOG.md#​2600-httpsgithubcomkulshekharts-jestcomparev2551v2600-2020-05-15) [Compare Source](https://togithub.com/kulshekhar/ts-jest/compare/v25.5.1...v26.0.0) ##### Bug Fixes - **compiler:** return `undefined` for `getScriptVersion` when a file doesn't exist in memory cache ([#​1641](https://togithub.com/kulshekhar/ts-jest/issues/1641)) ([6851b8e](https://togithub.com/kulshekhar/ts-jest/commit/6851b8e)) ##### Features - support Jest v26 ([#​1602](https://togithub.com/kulshekhar/ts-jest/issues/1602)) ([23b7741](https://togithub.com/kulshekhar/ts-jest/commit/23b7741)) ##### BREAKING CHANGES - Requires a minimum of TypeScript v3.8 - Drop support for Node 8 #### [25.5.1](https://togithub.com/kulshekhar/ts-jest/compare/v25.5.0...v25.5.1) (2020-05-09) ##### Bug Fixes - **compiler:** don't resolve files from build folder for `projectReferences` ([#​1614](https://togithub.com/kulshekhar/ts-jest/issues/1614)) ([74b92d3](https://togithub.com/kulshekhar/ts-jest/commit/74b92d3)) - **config:** don't set `include` value of `tsconfig` to empty array ([#​1606](https://togithub.com/kulshekhar/ts-jest/issues/1606)) ([8a29aaa](https://togithub.com/kulshekhar/ts-jest/commit/8a29aaa))

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[codecov[bot]]

Codecov Report

Merging #71 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #71   +/-   ##
=======================================
  Coverage   40.78%   40.78%           
=======================================
  Files           5        5           
  Lines          76       76           
  Branches        3        3           
=======================================
  Hits           31       31           
  Misses         45       45           

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