Bump nixos/nix in /nix

Bumps nixos/nix in `/nix` from 2.34.7 to 2.35.2.


Updates `nixos/nix` from 2.34.7 to 2.35.2

---
updated-dependencies:
- dependency-name: nixos/nix
  dependency-version: 2.35.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: docker
...

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