build(deps): bump overlayscrollbars from 2.6.1 to 2.8.3

Bumps [overlayscrollbars](https://github.com/KingSora/OverlayScrollbars/tree/HEAD/packages/overlayscrollbars) from 2.6.1 to 2.8.3.
- [Release notes](https://github.com/KingSora/OverlayScrollbars/releases)
- [Changelog](https://github.com/KingSora/OverlayScrollbars/blob/master/packages/overlayscrollbars/CHANGELOG.md)
- [Commits](https://github.com/KingSora/OverlayScrollbars/commits/HEAD/packages/overlayscrollbars)

---
updated-dependencies:
- dependency-name: overlayscrollbars
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>