build(deps): bump nix from 0.18.0 to 0.19.0

Bumps [nix](https://github.com/nix-rust/nix) from 0.18.0 to 0.19.0.
- [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/v0.18.0...v0.19.0)

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

Cargo.lock

@@ -525,9 +525,9 @@ checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
 
 [[package]]
 name = "libc"
-version = "0.2.74"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2f02823cf78b754822df5f7f268fb59822e7296276d3e069d8e8cb26a14bd10"
+checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
 
 [[package]]
 name = "libdbus-sys"
@@ -660,9 +660,9 @@ dependencies = [
 
 [[package]]
 name = "nix"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83450fe6a6142ddd95fb064b746083fc4ef1705fe81f64a64e1d4b39f54a1055"
+checksum = "85db2feff6bf70ebc3a4793191517d5f0331100a2f10f9bf93b5e5214f32b7b7"
 dependencies = [
  "bitflags 1.2.1",
  "cc",

Cargo.toml

@@ -77,7 +77,7 @@ winapi = { version = "0.3", features = [
 ] }
 
 [target.'cfg(not(windows))'.dependencies]
-nix = "0.18.0"
+nix = "0.19.0"
 
 [dev-dependencies]
 tempfile = "3.1.0"