build(deps-dev): bump @wessberg/rollup-plugin-ts from 1.3.6 to 1.3.8 (#533)

Bumps [@wessberg/rollup-plugin-ts](https://github.com/wessberg/rollup-plugin-ts) from 1.3.6 to 1.3.8.
- [Release notes](https://github.com/wessberg/rollup-plugin-ts/releases)
- [Changelog](https://github.com/wessberg/rollup-plugin-ts/blob/master/CHANGELOG.md)
- [Commits](wessberg/rollup-plugin-ts@v1.3.6...v1.3.8)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]