easyloggingpp: 9.96.1 -> 9.96.2

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

This update was made based on information from https://repology.org/metapackage/easyloggingpp/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 9.96.2 with grep in /nix/store/b1cczf98rkjasl6qwjbzhgns4jy025px-easyloggingpp-9.96.2
- directory tree listing: https://gist.github.com/be5c17c733361d9cd681055de44e8424