build(deps): bump json5 and @yandex/themekit

Bumps [json5](https://github.com/json5/json5) to 2.2.3 and updates ancestor dependency [@yandex/themekit](https://github.com/bem/themekit). These dependencies need to be updated together.


Updates `json5` from 2.2.0 to 2.2.3
- [Release notes](https://github.com/json5/json5/releases)
- [Changelog](https://github.com/json5/json5/blob/main/CHANGELOG.md)
- [Commits](json5/json5@v2.2.0...v2.2.3)

Updates `@yandex/themekit` from 1.6.8 to 2.0.0-alpha.1
- [Release notes](https://github.com/bem/themekit/releases)
- [Changelog](https://github.com/bem/themekit/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bem/themekit/commits)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: "@yandex/themekit"
  dependency-type: direct:development
...

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