Bump nix from 0.17.0 to 0.23.1 (#1017)

Bumps [nix](https://github.com/nix-rust/nix) from 0.17.0 to 0.23.1.
- [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...v0.23.1)

---
updated-dependencies:
- dependency-name: nix
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

cumulus/polkadot-parachains/Cargo.toml

@@ -93,7 +93,7 @@ substrate-build-script-utils = { git = "https://github.com/paritytech/substrate"
 
 [dev-dependencies]
 assert_cmd = "0.12"
-nix = "0.17"
+nix = "0.23"
 tempfile = "3.2.0"
 
 [features]