flake.lock: Update

[drupol]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/2c27ab2e60502d1ebb7cf38909de38663f762a79?narHash=sha256-n/DOfpKH1vkukuBnach91QBQId2dr5tkE7/7UrkV2zw%3D' (2024-12-01)
  → 'github:NixOS/nixpkgs/31d66ae40417bb13765b0ad75dd200400e98de84?narHash=sha256-7NbtSLfZO0q7MXPl5hzA0sbVJt6pWxxtGWbaVUDDmjs%3D' (2024-12-01)

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