audit: 2.8.2 -> 2.8.3

Semi-automatic update generated by https://github.com/ryantm/nix-update tools. These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 2.8.3 in filename of file in /nix/store/gqr774xsr2qkb7g7s5zz56lyvdf0qm0c-atk-2.28.1