flake.lock: Update (#409)

Flake lock file updates:

• Updated input 'darwin':
    'github:lnl7/nix-darwin/0fc4e7a' (2026-01-18)
  → 'github:lnl7/nix-darwin/0d7874e' (2026-02-04)
• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/80daad0' (2026-01-11)
  → 'github:hercules-ci/flake-parts/5792860' (2026-02-02)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:nix-community/nixpkgs.lib/2075416' (2025-12-14)
  → 'github:nix-community/nixpkgs.lib/7271616' (2026-02-01)
• Updated input 'git-hooks':
    'github:cachix/git-hooks.nix/a1ef738' (2026-01-22)
  → 'github:cachix/git-hooks.nix/a8ca480' (2026-02-01)
• Updated input 'home-manager':
    'github:nix-community/home-manager/175532b' (2026-01-29)
  → 'github:nix-community/home-manager/471e6a0' (2026-02-05)
• Updated input 'nh':
    'github:nix-community/nh/e0eedfb' (2026-01-29)
  → 'github:nix-community/nh/8c5e29c' (2026-02-01)
• Updated input 'nix-index-database':
    'github:Mic92/nix-index-database/82befcf' (2025-12-09)
  → 'github:Mic92/nix-index-database/2684bb8' (2026-02-05)
• Updated input 'nixos-unstable':
    'github:nixos/nixpkgs/bfc1b8a' (2026-01-26)
  → 'github:nixos/nixpkgs/00c21e4' (2026-02-04)
• Updated input 'stable':
    'github:nixos/nixpkgs/fa83fd8' (2026-01-28)
  → 'github:nixos/nixpkgs/e576e3c' (2026-02-03)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/28b19c5' (2026-01-29)
  → 'github:numtide/treefmt-nix/337a4fe' (2026-02-04)
• Updated input 'unstable':
    'github:nixos/nixpkgs/afce963' (2026-01-27)
  → 'github:nixos/nixpkgs/aa290c9' (2026-02-04)

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

Author: kclejeune