deps: update flake.lock (#161)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/6308c3b21396534d8aaeac46179c14c439a89b8a?narHash=sha256-xKPyJoMoXfXpDM5DFDZDsi9PHArf2k5BJjvReYXoFpM%3D' (2026-01-30)
  → 'github:nixos/nixpkgs/ae67888ff7ef9dff69b3cf0cc0fbfbcd3a722abe?narHash=sha256-P7dWMHRUWG5m4G%2B06jDyThXO7kwSk46C1kgjEWcybkE%3D' (2026-02-06)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/a1ef738813b15cf8ec759bdff5761b027e3e1d23?narHash=sha256-Efs3VUPelRduf3PpfPP2ovEB4CXT7vHf8W%2Bxc49RL/U%3D' (2026-01-22)
  → 'github:cachix/pre-commit-hooks.nix/a8ca480175326551d6c4121498316261cbb5b260?narHash=sha256-Fok2AmefgVA0%2Beprw2NDwqKkPGEI5wvR%2BtwiZagBvrg%3D' (2026-02-01)

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

Author: mrcjkb