build(deps): bump nix from 0.26.2 to 0.29.0

Bumps [nix](https://github.com/nix-rust/nix) from 0.26.2 to 0.29.0.
- [Changelog](https://github.com/nix-rust/nix/blob/master/CHANGELOG.md)
- [Commits](nix-rust/nix@v0.26.2...v0.29.0)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -34,5 +34,5 @@ clap = { version = "4", default-features = false, features = ["std", "cargo", "h
 uzers = ">= 0.10, < 0.12"
 
 [dev-dependencies]
-nix = ">= 0.17, < 0.27"
+nix = ">= 0.17, < 0.30"
 tempfile = "3"