The nixpkgs-unstable channel's programs.sqlite was used to identify
packages producing exactly one binary, and these automatically added
to their package definitions wherever possible.
Update invoice2data to version v0.4.2 [released on 2023-02-11](https://github.com/invoice-x/invoice2data/releases/tag/v0.4.2).
This change also
* Installs `ghostscript`, which is used to convert pdfs to images used as input for tesseract
* Uses tesseract 5 instead of tesseract 3
* Switches from `xpdf` (which is also marked as insecure) to `poppler_utils`, which is the recommended provider of `pdftotext` according to the `invoice2data` repo.