flake.lock: Update (#490)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/fa35a3c8e17a3de613240fea68f876e5b4896aec?narHash=sha256-7Fu7oazPoYCbDzb9k8D/DdbKrC3aU1zlnc39Y8jy/s8%3D' (2025-02-08)
  → 'github:nixos/nixpkgs/b2243f41e860ac85c0b446eadc6930359b294e79?narHash=sha256-M4ilIfGxzbBZuURokv24aqJTbdjPA9K%2BDtKUzrJaES4%3D' (2025-02-09)

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

Author: mrcjkb