Update Nix flake inputs

[github-actions]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'nixpkgs':
    'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.886100%2Brev-08dacfca559e1d7da38f3cf05f1f45ee9bfd213c/019a329e-32b1-7e68-9599-4784bdd5f623/source.tar.gz' (2025-10-28)
  → 'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.1.903292%2Brev-2fad6eac6077f03fe109c4d4eb171cf96791faa4/019ac93d-65f7-741e-8e2f-c147d3cbc70f/source.tar.gz' (2025-11-27)

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, close and re-open this pull request.

[coderabbitai]

Important

Review skipped

Bot user detected.

To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}