Update dependency ts-loader to ^8.0.3

Created by: renovate[bot]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
ts-loader	dependencies	patch	^8.0.3	source

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Release Notes

TypeStrong/ts-loader

v8.0.3

Compare Source

• Fix the wrong instance caching when using appendTsSuffixTo and appendTsxSuffixTo together - thanks @​meowtec

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