build(deps): bump libc from 0.2.167 to 0.2.168

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.167 to 0.2.168.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Changelog](https://github.com/rust-lang/libc/blob/0.2.168/CHANGELOG.md)
- [Commits](rust-lang/libc@0.2.167...0.2.168)

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

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -17,7 +17,7 @@ clap = { version = "4", default-features = false, features = [
   "help",
 ] }
 log = "0.4.22"
-libc = "0.2.167"
+libc = "0.2.168"
 parking_lot = "0.12.3"
 nix = { version = "0.29.0", features = [
   "fs",