skrooge: 2.11.0 -> 2.12.0

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

- built on NixOS
- ran `/nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0/bin/skroogeconvert -h` got 0 exit code
- ran `/nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0/bin/skroogeconvert --help` got 0 exit code
- ran `/nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0/bin/skroogeconvert -v` and found version 2.12.0
- ran `/nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0/bin/skroogeconvert --version` and found version 2.12.0
- ran `/nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0/bin/skroogeconvert -h` and found version 2.12.0
- ran `/nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0/bin/skroogeconvert --help` and found version 2.12.0
- found 2.12.0 with grep in /nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0
- found 2.12.0 in filename of file in /nix/store/yjdafzss769kl6jg9asxyalgy7a5xxz7-skrooge-2.12.0