chore(deps): update dependency ts-jest to ~26.4.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ts-jest (source)	devDependencies	minor	~26.3.0 -> ~26.4.0

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Release Notes

kulshekhar/ts-jest

v26.4.4

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Bug Fixes

• revert usage of @jest/create-cache-key-function (#​2108) (dee8231), closes #​2080 #​2090 #​2104

Features

• testing: expose all types for util mocked (#​2096) (b1d072b), closes #​2086

v26.4.3

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Bug Fixes

• compiler: only exclude test files when initializing compiler (#​2062) (7264c13), closes #​2061, #​2068, #​2072, #​2073
• config: resolve .babelrc file path before attempting to read it (#​2071) (681bfef), closes #​2064

Features

• config: allow to override resolve tsconfig behavior (#​2063) (9f46ace)

v26.4.2

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Features

• config: expose several typings as public apis (#​2054) (3b6b705)

Performance Improvements

• compiler: speed up bootstrap time for isolatedModules:false (#​2055) (230b5dd)

DEPRECATIONS

• config: deprecate tsConfig in favor of tsconfig (#​1997)
• config: deprecate packageJson since internal codes don't use it anymore (#​2034)

v26.4.1

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Bug Fixes

• utils: MaybeMockedConstructor returns T (#​1976) (b7712b2)
• utils: revert path.join and add check on prefix ends with / (#​1989) (3d9035b), closes #​1982

v26.4.0

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Bug Fixes

• utils: pathsToModuleNameMapper resolve path mapping with path.join (#​1969) (81fce4c), closes #​1968
• set minimum jest-util version at 26.1.0 (#​1914) (f00414c), closes #​1913

Features

• config: allow custom options in custom transformers (#​1966) (1452ce4), closes #​1942
• transformers: support hoisting when using @jest/globals (#​1937) (0e5be15), closes #​1593
• transformers: add path-mapping custom AST transformer (#​1927) (3325186)

Performance Improvements

• compiler: remove createProgram for isolatedModules: true to boost startup speed (#​1941) (dd84534)

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