Bump nix from 0.14.1 to 0.25.0

Bumps [nix](https://github.com/nix-rust/nix) from 0.14.1 to 0.25.0.
- [Release notes](https://github.com/nix-rust/nix/releases)
- [Changelog](https://github.com/nix-rust/nix/blob/master/CHANGELOG.md)
- [Commits](nix-rust/nix@v0.14.1...v0.25.0)

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

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

Author: dependabot[bot]

Cargo.toml

@@ -15,7 +15,7 @@ readme      = "README.md"
 
 [dependencies]
 comma = "1.0"
-nix = "0.14"
+nix = "0.25"
 regex = "1"
 tempfile = "3"
 thiserror = "1.0.34"