flake.lock: update

• Updated input 'mystia':
    'github:soopyc/mystia/74617bd294102921f26f1b322367cb30d6043723' (2024-01-04)
  → 'github:soopyc/mystia/f1c03953ce1d2b6dab8e504cea6fc2ec1f4949fc' (2024-01-08)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/bd645e8668ec6612439a9ee7e71f7eac4099d4f6' (2024-01-02)
  → 'github:NixOS/nixpkgs/317484b1ead87b9c1b8ac5261a8d2dd748a0492d' (2024-01-08)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/cfdbaf68d00bc2f9e071f17ae77be4b27ff72fa6' (2023-12-31)
  → 'github:Mic92/sops-nix/c0b3a5af90fae3ba95645bbf85d2b64880addd76' (2024-01-10)
• Updated input 'sops-nix/nixpkgs-stable':
    'github:NixOS/nixpkgs/0aad9113182747452dbfc68b93c86e168811fa6c' (2023-12-30)
  → 'github:NixOS/nixpkgs/70bdadeb94ffc8806c0570eb5c2695ad29f0e421' (2024-01-03)