feat: update flake.lock (#79)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/b024ced1aac25639f8ca8fdfc2f8c4fbd66c48ef?narHash=sha256-fusHbZCyv126cyArUwwKrLdCkgVAIaa/fQJYFlCEqiU%3D' (2025-04-17)
  → 'github:nixos/nixpkgs/f771eb401a46846c1aebd20552521b233dd7e18b?narHash=sha256-ITSpPDwvLBZBnPRS2bUcHY3gZSwis/uTe255QgMtTLA%3D' (2025-04-24)

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Author: github-actions[bot]