build(deps): bump nix from 0.27.1 to 0.28.0

Bumps [nix](https://github.com/nix-rust/nix) from 0.27.1 to 0.28.0.
- [Changelog](https://github.com/nix-rust/nix/blob/master/CHANGELOG.md)
- [Commits](nix-rust/nix@v0.27.1...v0.28.0)

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

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

Cargo.toml

@@ -69,7 +69,7 @@ is-terminal = "0.4"
 libc = "0.2.153"
 libdnf-sys = { path = "rust/libdnf-sys", version = "0.1.0" }
 maplit = "1.0"
-nix = { version = "0.27.1", features = ["fs", "mount", "signal", "user"] }
+nix = { version = "0.28.0", features = ["fs", "mount", "signal", "user"] }
 openssl = "0.10.60"
 once_cell = "1.19.0"
 os-release = "0.1.0"