flake.lock: Update (#504)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/d9b69c3ec2a2e2e971c534065bdd53374bd68b97?narHash=sha256-ATMHHrg3sG1KgpQA5x8I%2BzcYpp5Sf17FaFj/fN%2B8OoQ%3D' (2025-02-24)
  → 'github:nixos/nixpkgs/3a05eebede89661660945da1f151959900903b6a?narHash=sha256-Ly2fBL1LscV%2BKyCqPRufUBuiw%2BzmWrlJzpWOWbahplg%3D' (2025-02-26)

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

Author: mrcjkb