mod_wsgi: 4.6.2 -> 4.6.3

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

This update was made based on information from https://repology.org/metapackage/mod_wsgi/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 4.6.3 with grep in /nix/store/gbxacl8l13m47bgjr1gnqarwi24jpchg-mod_wsgi-4.6.3
- directory tree listing: https://gist.github.com/a4132a8c78a2ba061a8c9c4b629bb2ae