Update dependency rollup-plugin-dts to v4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup-plugin-dts	^3.0.2 -> ^4.0.0

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Release Notes

Swatinem/rollup-plugin-dts

### [`v4.0.0`](https://togithub.com/Swatinem/rollup-plugin-dts/blob/master/CHANGELOG.md#​400) [Compare Source](https://togithub.com/Swatinem/rollup-plugin-dts/compare/v3.0.2...v4.0.0) **Compatibility Notice**: This release targets **TypeScript 4.4** and **Rollup 2.56**. **Fixes**: - Add preliminary support for nested namespace declarations. - Fix renaming of exports from namespaces declarations.

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