flake.lock: Update

Flake lock file updates:

• Updated input 'llama-cpp':
    'github:philiptaron/llama.cpp/1efbc6b0643751480a879d94600b589b95e82e21' (2023-12-26)
  → 'github:philiptaron/llama.cpp/3f7003b4bb6e9314ba4f65770dfdcea08a540e7b' (2023-12-26)
• Updated input 'nix-darwin':
    'github:LnL7/nix-darwin/f454cff5fe84adca9e8aa8d546d2c9879b789950' (2023-12-24)
  → 'github:LnL7/nix-darwin/8a8321271f0835fae2cb195e1137cb381fdbcc8e' (2023-12-27)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/7cef1a983305fa38a913dc400bca117a3de9f3df' (2023-12-26)
  → 'github:nixos/nixpkgs/3103346b645995d65a30a0ef05730ddc52a2d08e' (2023-12-27)

Author: philiptaron