chore: update flake.lock

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/af66ad1' (2025-08-06)
  → 'github:hercules-ci/flake-parts/2cccadc' (2025-11-21)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:nix-community/nixpkgs.lib/0f36c44' (2025-07-27)
  → 'github:nix-community/nixpkgs.lib/719359f' (2025-10-29)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/620f256' (2025-08-31)
  → 'github:NixOS/nixpkgs/71f1d68' (2025-11-29)
• Updated input 'pre-commit-hooks-nix':
    'github:cachix/pre-commit-hooks.nix/e891a93' (2025-08-23)
  → 'github:cachix/pre-commit-hooks.nix/50b9238' (2025-11-24)
• Updated input 'pre-commit-hooks-nix/flake-compat':
    'github:edolstra/flake-compat/9100a0f' (2025-05-12)
  → 'github:edolstra/flake-compat/f387cd2' (2025-10-27)

Author: github-actions[bot]