chore: bump sysctl from 0.4.4 to 0.6.0

Bumps [sysctl](https://github.com/johalun/sysctl-rs) from 0.4.4 to 0.6.0.
- [Release notes](https://github.com/johalun/sysctl-rs/releases)
- [Changelog](https://github.com/johalun/sysctl-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/johalun/sysctl-rs/commits/v0.6.0)

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

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