Merge pull request #55 from jewlexx/renovate/nix-0.x

Update Rust crate nix to 0.29

Cargo.toml

@@ -35,7 +35,7 @@ windows = { version = "0.58", features = [
 ] }
 
 [target.'cfg(unix)'.dependencies]
-nix = { version = "0.28", features = ["user"] }
+nix = { version = "0.29", features = ["user"] }
 
 [features]
 all = ["macros", "network", "root", "std", "traits"]