flake.lock: Update

[ibizaman]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/5f64a12a728902226210bf01d25ec6cbb9d9265b' (2023-12-24)
  → 'github:nixos/nixpkgs/cfc3698c31b1fb9cdcf10f36c9643460264d0ca8' (2023-12-27)

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, run:

git branch -D update_flake_lock_action
git fetch origin
git checkout update_flake_lock_action
git commit --amend --no-edit
git push origin update_flake_lock_action --force