flake.lock: Update (#6)

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/6761b8188b860f374b457eddfdb05c82eef9752f' (2023-12-10)
  → 'github:nix-community/home-manager/1488651d02c1a7a15e284210f0d380a62d8d8cef' (2023-12-17)
• Updated input 'home-manager-unstable':
    'github:nix-community/home-manager/0e2e443ff24f9d75925e91b89d1da44b863734af' (2023-12-14)
  → 'github:nix-community/home-manager/efc177c15f2a8bb063aeb250fe3c7c21e1de265e' (2023-12-19)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/cf28ee258fd5f9a52de6b9865cdb93a1f96d09b7' (2023-12-12)
  → 'github:nixos/nixpkgs/d02ffbbe834b5599fc5f134e644e49397eb07188' (2023-12-18)
• Updated input 'nixpkgs-unstable':
    'github:nixos/nixpkgs/a9bf124c46ef298113270b1f84a164865987a91c' (2023-12-11)
  → 'github:nixos/nixpkgs/91a00709aebb3602f172a0bf47ba1ef013e34835' (2023-12-17)
• Updated input 'nur':
    'github:nix-community/NUR/157631ae9c55d2050c988b7f4f275fd67638b175' (2023-12-14)
  → 'github:nix-community/NUR/73ddd465ba3fa1757e9f72be6420aabd78b5a764' (2023-12-20)

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