flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
  → 'github:numtide/flake-utils/4022d587cbbfd70fe950c1e2083a02621806a725' (2023-12-04)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/7414e9ee0b3e9903c24d3379f577a417f0aae5f1' (2023-11-16)
  → 'github:nixos/nixpkgs/d6863cbcbbb80e71cecfc03356db1cda38919523' (2023-12-21)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/e558068cba67b23b4fbc5537173dbb43748a17e8' (2023-11-15)
  → 'github:cachix/pre-commit-hooks.nix/007a45d064c1c32d04e1b8a0de5ef00984c419bc' (2023-12-13)