flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2411.717484%2Brev-26245db0cb552047418cfcef9a25da91b222d6c7/01967ace-4a07-717a-a72f-cc60008c3b59/source.tar.gz?narHash=sha256-1rqa/XPSJqJg21BKWjzJZC7yU0l/YTVtjRi0RJmipus%3D' (2025-04-27)
  → 'https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2505.803882%2Brev-fd487183437963a59ba763c0cc4f27e3447dd6dd/019767cd-a737-7649-ab6d-467a58ba9f92/source.tar.gz?narHash=sha256-mHv/yeUbmL91/TvV95p%2BmBVahm9mdQMJoqaTVTALaFw%3D' (2025-06-12)

Author: github-actions[bot]