build(deps): bump nix from 0.17.0 to 0.18.0

Bumps [nix](https://github.com/nix-rust/nix) from 0.17.0 to 0.18.0.
- [Release notes](https://github.com/nix-rust/nix/releases)
- [Changelog](https://github.com/nix-rust/nix/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nix-rust/nix/compare/v0.17.0...v0.18.0)

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

Cargo.lock

@@ -524,9 +524,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.71"
+version = "0.2.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"
+checksum = "bd7d4bd64732af4bf3a67f367c27df8520ad7e230c5817b8ff485864d80242b9"
 
 [[package]]
 name = "libgit2-sys"
@@ -653,15 +653,14 @@ dependencies = [
 
 [[package]]
 name = "nix"
-version = "0.17.0"
+version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50e4785f2c3b7589a0d0c1dd60285e1188adac4006e8abd6dd578e1567027363"
+checksum = "83450fe6a6142ddd95fb064b746083fc4ef1705fe81f64a64e1d4b39f54a1055"
 dependencies = [
  "bitflags",
  "cc",
  "cfg-if",
  "libc",
- "void",
 ]
 
 [[package]]
@@ -1165,7 +1164,7 @@ dependencies = [
  "git2",
  "log",
  "native-tls",
- "nix 0.17.0",
+ "nix 0.18.0",
  "nom",
  "once_cell",
  "open",

Cargo.toml

@@ -69,7 +69,7 @@ native-tls = { version = "0.2", optional = true }
 winapi = { version = "0.3", features = ["winuser", "securitybaseapi", "processthreadsapi", "handleapi", "impl-default"]}
 
 [target.'cfg(not(windows))'.dependencies]
-nix = "0.17.0"
+nix = "0.18.0"
 
 [dev-dependencies]
 tempfile = "3.1.0"