build(deps): bump scc from 2.1.7 to 2.1.8 (servo#32937)

Bumps [scc](https://github.com/wvwwvwwv/scalable-concurrent-containers) from 2.1.7 to 2.1.8.
- [Changelog](https://github.com/wvwwvwwv/scalable-concurrent-containers/blob/main/CHANGELOG.md)
- [Commits](https://github.com/wvwwvwwv/scalable-concurrent-containers/commits)

---
updated-dependencies:
- dependency-name: scc
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]