babl: 0.1.44 -> 0.1.46 (#38862)

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

This update was made based on information from https://repology.org/metapackage/babl/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 0.1.46 with grep in /nix/store/6kx1zn1xb71zhhq4bikgyp9gvgrfh573-babl-0.1.46
- directory tree listing: https://gist.github.com/1626f882c7f8a9b5ac71254a7a415742