chore(deps): update rust crate nix to 0.31

Author: renovate[bot]

Cargo.lock

@@ -60,7 +60,7 @@ libc = "0.2.171"
 libmount-sys = "0.1.1"
 linux-raw-sys = { version = "0.12.0", features = ["ioctl"] }
 md-5 = "0.10.6"
-nix = { version = "0.30", default-features = false }
+nix = { version = "0.31", default-features = false }
 parse_datetime = "0.11.0"
 phf = "0.13.0"
 phf_codegen = "0.13.0"