flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'https://api.flakehub.com/f/pinned/nixos/nixpkgs/0.1.907002%2Brev-f61125a668a320878494449750330ca58b78c557/019af28f-4a47-7f68-a9d7-f6f6e905b8ab/source.tar.gz' (2025-12-05)
  → 'https://api.flakehub.com/f/pinned/nixos/nixpkgs/0.1.910362%2Brev-2fbfb1d73d239d2402a8fe03963e37aab15abe8b/019b161c-f2f3-7ef2-874d-9334c07d9950/source.tar.gz' (2025-12-11)

Author: github-actions[bot]