chore: bump sysctl from 0.4.2 to 0.4.3 (#21117)

Bumps [sysctl](https://github.com/johalun/sysctl-rs) from 0.4.2 to 0.4.3.
- [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)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

sys-tuner/Cargo.toml

@@ -21,7 +21,7 @@ solana-version = { path = "../version", version = "=1.9.0" }
 unix_socket2 = "0.5.4"
 users = "0.10.0"
 nix = "0.23.0"
-sysctl = "0.4.2"
+sysctl = "0.4.3"
 
 [lib]
 name = "solana_sys_tuner"