flake.lock: Update

[github-actions]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/7f62671ffcb37436b3df7d6ae44dfdca9e5a069d?narHash=sha256-8iwNoSDOCKFnDF7f8XReiztpESA0GyFieKhWAaG7jrw%3D' (2024-04-19)
  → 'github:NixOS/nixpkgs/efc1c323f5c84fd7a21dbf9f7cc264dadbaa8947?narHash=sha256-9/tCnrvGgh3yzrxV2Lu9r4DZfUZGsb7g9MIeV8gq45E%3D' (2024-10-19)

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