freetds: 1.00.70 -> 1.00.80

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/freetds/versions.

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 1.00.80 with grep in /nix/store/wznadivgkf087g4rn7hnaxs9d7p3ni6v-freetds-1.00.80
- directory tree listing: https://gist.github.com/12294dc828716a83c0071c5ce265a1ba