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

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ts-jest (source)	devDependencies	major	25.5.1 -> 26.1.2

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Release Notes

kulshekhar/ts-jest

v26.1.2

Compare Source

Bug Fixes

• compiler: use resolveModuleNames TypeScript API to get resolved modules for test files (#​1784) (5f26054), closes #​1747
• config: invalidate cache when other options in tsconfig change (#​1788) (6948855)

Performance Improvements

• compiler: cache module resolution for isolatedModules: false (#​1786) (7f731ed)
• compiler: use globsToMatcher from jest-util (#​1754) (44f3913)

v26.1.1

Compare Source

Bug Fixes

• compiler: generate source map correctly when tsconfig mapRoot is set (#​1741) (01ac417), closes #​1718
• config: show version warning when using ts-jest without babel (#​1729) (e512bc0), fixes #​1678-issuecomment-641930332, #​1678-issuecomment-639528993

v26.1.0

Compare Source

Bug Fixes

• typing: don't mark BabelConfig as internal type (#​1667) (558c307), closes #​1666

Features

• config: show a warning message when TypeScript target version doesn't match with recommended NodeJs version (#​1678) (085bdf5)
• config: support multiple paths for pathsToModuleNameMapper (#​1690) (a727bd5)
• support TypeScript 3.9 (#​1653) (fc3d5ad)

v26.0.0

Compare Source

Bug Fixes

• compiler: return undefined for getScriptVersion when a file doesn't exist in memory cache (#​1641) (6851b8e)

Features

• support Jest v26 (#​1602) (23b7741)

BREAKING CHANGES

• Requires a minimum of TypeScript v3.8
• Drop support for Node 8

25.5.1 (2020-05-09)

Bug Fixes

• compiler: don't resolve files from build folder for projectReferences (#​1614) (74b92d3)
• config: don't set include value of tsconfig to empty array (#​1606) (8a29aaa)

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[coveralls]

Coverage remained the same at 100.0% when pulling da4338e on renovate/ts-jest-26.x into 9b6268e on master.