chore(deps): update dependency ts-loader to v8.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ts-loader	8.0.12 -> 8.4.0

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Release Notes

TypeStrong/ts-loader

v8.4.0

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• fix: cater for change in resolveTypeReferenceDirective API in 4.7 - thanks @​dragomirtitian
• This is a backport from v9.2.7 for webpack 4 compatibility

v8.3.0

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• Fixed impossibility to have several instances of ts-loader with different compiler options - thanks @​timocov
• This is a backport from v9.2.0 for webpack 4 compatibility

v8.2.0

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• Use caches for module resolution and type reference directives when using compiler default functions - thanks @​sheetalkamat - uses: https://github.com/microsoft/TypeScript/pull/43700
• This is a backport from v9.1.0 for webpack 4 compatibility

v8.1.0

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• feat: remove top-level typescript import statements - thanks @​ulivz

v8.0.18

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• Perf: Optimize fileExists callback path - thanks @​berickson1

v8.0.17

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• Included correct webpack source location in emitted errors - thanks @​lorenzodallavecchia

v8.0.16

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• Re-Fixed missing errors in watch mode in webpack5 - thanks @​appzuka

v8.0.15

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• Update definition files in watch mode in webpack@5 - thanks @​appzuka,@​JonWallsten,@​alexander-akait
• Add afterDeclarations to getCustomTransformers in README.md - thanks @​appzuka

v8.0.14

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• Upgrade chalk, loader-utils, and semver to latest stable versions - thanks Avi Vahl

v8.0.13

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• Speed up builds by adding an in-memory cache to file path lookups - thanks @​berickson1

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