libqrencode: 3.4.4 -> 4.0.0 (#38711)

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/qb2z3p3zcqmn0qskcck42z4ffv3107p5-libqrencode-4.0.0/bin/qrencode -h’ got 0 exit code
- ran ‘/nix/store/qb2z3p3zcqmn0qskcck42z4ffv3107p5-libqrencode-4.0.0/bin/qrencode --help’ got 0 exit code
- found 4.0.0 with grep in /nix/store/qb2z3p3zcqmn0qskcck42z4ffv3107p5-libqrencode-4.0.0
- directory tree listing: https://gist.github.com/2503d88770c4325ed73850dbd72eb7bf