chore: update flake (#111)

Flake lock file updates:

• Updated input 'master':
    'github:NixOS/nixpkgs/aaf5e216af06f291f31d7c06801b5c09635b00b5' (2023-10-15)
  → 'github:NixOS/nixpkgs/9aa726b4481455bc8508e2721b0ee183e1ff7e47' (2023-10-22)
• Updated input 'nixos-hardware':
    'github:NixOS/nixos-hardware/fb6af288f6cf0f00d3af60cf9d5110433b954565' (2023-10-12)
  → 'github:NixOS/nixos-hardware/72d53d51704295f1645d20384cd13aecc182f624' (2023-10-19)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/bd1cde45c77891214131cbbea5b1203e485a9d51' (2023-10-11)
  → 'github:NixOS/nixpkgs/679cadfdfed2b90311a247b2d6ef6dfd3d6cab73' (2023-10-20)
• Updated input 'nur':
    'github:nix-community/NUR/00cf27339d55115a0f5311041dded91049e4426d' (2023-10-14)
  → 'github:nix-community/NUR/59cbf5a1397d384c12cbc46b97d74b6b3e758916' (2023-10-22)
• Updated input 'unstable':
    'github:NixOS/nixpkgs/5e4c2ada4fcd54b99d56d7bd62f384511a7e2593' (2023-10-11)
  → 'github:NixOS/nixpkgs/7c9cc5a6e5d38010801741ac830a3f8fd667a7a0' (2023-10-19)

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