Bump rollup-plugin-dts from 1.1.10 to 1.1.12

Bumps [rollup-plugin-dts](https://github.com/Swatinem/rollup-plugin-dts) from 1.1.10 to 1.1.12.
- [Release notes](https://github.com/Swatinem/rollup-plugin-dts/releases)
- [Changelog](https://github.com/Swatinem/rollup-plugin-dts/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rollup-plugin-dts@v1.1.10...v1.1.12)

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