flake.lock: Update
Flake lock file updates:
• Updated input 'nixpkgs': 'github:nixos/nixpkgs/cfc3698c31b1fb9cdcf10f36c9643460264d0ca8' (2023-12-27) → 'github:nixos/nixpkgs/bd645e8668ec6612439a9ee7e71f7eac4099d4f6' (2024-01-02)
Flake lock file updates:
• Updated input 'nixpkgs': 'github:nixos/nixpkgs/cfc3698c31b1fb9cdcf10f36c9643460264d0ca8' (2023-12-27) → 'github:nixos/nixpkgs/bd645e8668ec6612439a9ee7e71f7eac4099d4f6' (2024-01-02)