chore(deps): update dependency @sourcegraph/tsconfig to v4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
@sourcegraph/tsconfig	devDependencies	major	^4.0.1	source

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Release Notes

sourcegraph/tsconfig

### [`v4.0.1`](https://togithub.com/sourcegraph/tsconfig/compare/v4.0.0...v4.0.1) [Compare Source](https://togithub.com/sourcegraph/tsconfig/compare/v4.0.0...v4.0.1) ### [`v4.0.0`](https://togithub.com/sourcegraph/tsconfig/compare/v3.0.0...v4.0.0) [Compare Source](https://togithub.com/sourcegraph/tsconfig/compare/v3.0.0...v4.0.0)

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