build(deps): bump the vhost group across 1 directory with 2 updates

Updates the requirements on [vm-memory](https://github.com/rust-vmm/vm-memory) and [nix](https://github.com/nix-rust/nix) to permit the latest version.

Updates `vm-memory` to 0.17.2
- [Release notes](https://github.com/rust-vmm/vm-memory/releases)
- [Changelog](https://github.com/rust-vmm/vm-memory/blob/v0.17.2/CHANGELOG.md)
- [Commits](https://github.com/rust-vmm/vm-memory/compare/v0.17.1...v0.17.2)

Updates `nix` to 0.31.3
- [Changelog](https://github.com/nix-rust/nix/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nix-rust/nix/compare/v0.30.0...v0.31.3)

---
updated-dependencies:
- dependency-name: nix
  dependency-version: 0.31.2
  dependency-type: direct:production
  dependency-group: vhost
- dependency-name: vm-memory
  dependency-version: 0.18.0
  dependency-type: direct:production
  dependency-group: vhost
...

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