chore(deps): update rust crate nix to 0.29

Author: renovate[bot]

Cargo.lock

@@ -47,7 +47,7 @@ phf = "0.11.2"
 phf_codegen = "0.11.2"
 textwrap = { version = "0.16.0", features = ["terminal_size"] }
 xattr = "1.3.1"
-nix = { version = "0.28", default-features = false }
+nix = { version = "0.29", default-features = false }
 tempfile = "3.9.0"
 rand = { version = "0.8", features = ["small_rng"] }
 serde = { version = "1.0", features = ["derive"] }