flake.lock: Update

Flake lock file updates:

• Updated input 'buildbot-nix':
    'github:Mic92/buildbot-nix/b1dd56c5b5f540930e451ac24ea76d29c1380c2b' (2024-02-15)
  → 'github:Mic92/buildbot-nix/064e545c12ef3845c75e5584e5c38e076a4e6f07' (2024-02-18)
• Updated input 'disko':
    'github:nix-community/disko/d07de570ba05cec2807d058daaa044f6955720c7' (2024-02-10)
  → 'github:nix-community/disko/1ae1f57dad13595600dd57b6a55fcbaef6673804' (2024-02-19)
• Updated input 'nix-darwin':
    'github:LnL7/nix-darwin/44f50a5ecaab72a61d5fd8e5c5717bc4bf9c25dd' (2024-02-12)
  → 'github:LnL7/nix-darwin/0e6857fa1d632637488666c08e7b02c08e3178f8' (2024-02-18)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/4dec2a6e52b5d910b428468680707f7f73a1219f' (2024-02-14)
  → 'github:NixOS/nixpkgs/35c5863c29ce81199ded8a3384f4979b7793f5dc' (2024-02-18)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/48afd3264ec52bee85231a7122612e2c5202fa74' (2024-02-13)
  → 'github:Mic92/sops-nix/ffed177a9d2c685901781c3c6c9024ae0ffc252b' (2024-02-18)