flake.lock: Update (#317)

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/2a39b0828bbffce0d73769a61e46e780488d098b?narHash=sha256-zRcwrZDeBfYipqv/7K7TqsfPb87LFU6b7JhoNUGSnvQ%3D' (2026-02-27)
  → 'github:nix-community/home-manager/daa2c221320809f5514edde74d0ad0193ad54ed8?narHash=sha256-Qjw6ILt8cb2HQQpCmWNLMZZ63wEo1KjTQt%2B1BcQBr7k%3D' (2026-03-06)
• Updated input 'nixos-pibox':
    'github:ipetkov/nixos-pibox/453bea983a3b897ea96d52d4643727ba2a7a8a62?narHash=sha256-CQKRuffFzlw1T90RYUy/mq5m137MQuz%2BnJkvbKOXuTE%3D' (2026-02-03)
  → 'github:ipetkov/nixos-pibox/4d62f62f6a4d682cb6a39be4b3aacc286c0a3bb9?narHash=sha256-TscjiltevPcsRKC3vi3V%2BXMUkqB3U5D7m/oIo7qWtmI%3D' (2026-03-03)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/2fc6539b481e1d2569f25f8799236694180c0993?narHash=sha256-0MAd%2B0mun3K/Ns8JATeHT1sX28faLII5hVLq0L3BdZU%3D' (2026-02-23)
  → 'github:NixOS/nixpkgs/80bdc1e5ce51f56b19791b52b2901187931f5353?narHash=sha256-QKyJ0QGWBn6r0invrMAK8dmJoBYWoOWy7lN%2BUHzW1jc%3D' (2026-03-04)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: ipetkov