flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/98708c5' (2025-08-01)
  → 'github:NixOS/nixpkgs/10b2374' (2025-12-01)
• Updated input 'pre-commit-hooks':
    'github:cachix/git-hooks.nix/16ec914' (2025-06-24)
  → 'github:cachix/git-hooks.nix/50b9238' (2025-11-24)
• Updated input 'pre-commit-hooks/flake-compat':
    'github:edolstra/flake-compat/0f9255e' (2023-10-04)
  → 'github:edolstra/flake-compat/f387cd2' (2025-10-27)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/6b9214f' (2025-07-29)
  → 'github:numtide/treefmt-nix/5b4ee75' (2025-11-12)

Author: github-actions[bot]