chore: update flake.lock

[mrcjkb]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/9cf7092bdd603554bd8b63c216e8943cf9b12512?narHash=sha256-9tpvMGFteZnd3gRQZFlRCohVpqooygFuy9yjuyRL2C0%3D' (2026-03-18)
  → 'github:NixOS/nixpkgs/832efc09b4caf6b4569fbf9dc01bec3082a00611?narHash=sha256-HaThtroVD9wRdx7KQk0B75JmFcXlMUoEdDFNOMOlsOs%3D' (2026-03-27)

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