Bump nth-check and svg-sprite (#73)

Bumps [nth-check](https://github.com/fb55/nth-check) to 2.1.1 and updates ancestor dependency [svg-sprite](https://github.com/svg-sprite/svg-sprite). These dependencies need to be updated together.


Updates `nth-check` from 1.0.2 to 2.1.1
- [Release notes](https://github.com/fb55/nth-check/releases)
- [Commits](fb55/nth-check@v1.0.2...v2.1.1)

Updates `svg-sprite` from 1.5.4 to 2.0.4
- [Release notes](https://github.com/svg-sprite/svg-sprite/releases)
- [Changelog](https://github.com/svg-sprite/svg-sprite/blob/main/CHANGELOG.md)
- [Commits](svg-sprite/svg-sprite@v1.5.4...v2.0.4)

---
updated-dependencies:
- dependency-name: nth-check
  dependency-type: indirect
- dependency-name: svg-sprite
  dependency-type: direct:production
...

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