flake.lock: Update (#217)

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/59cf3f1447cfc75087e7273b04b31e689a8599fb' (2023-08-01)
  → 'github:hercules-ci/flake-parts/7f53fdb7bdc5bb237da7fefef12d099e4fd611ca' (2023-09-01)
• Updated input 'home-manager':
    'github:nix-community/home-manager/6a20e40acaebf067da682661aa67da8b36812606' (2023-08-23)
  → 'github:nix-community/home-manager/f5c15668f9842dd4d5430787d6aa8a28a07f7c10' (2023-08-30)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/18324978d632ffc55ef1d928e81630c620f4f447' (2023-08-24)
  → 'github:nixos/nixpkgs/aa8aa7e2ea35ce655297e8322dc82bf77a31d04b' (2023-09-01)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>