verilator: 3.922 -> 3.924

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

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

These checks were done:

- built on NixOS
- /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924/bin/verilator_bin passed the binary check.
- /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924/bin/verilator_bin_dbg passed the binary check.
- /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924/bin/verilator_coverage_bin_dbg passed the binary check.
- /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924/bin/verilator passed the binary check.
- /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924/bin/verilator_coverage passed the binary check.
- Warning: no invocation of /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924/bin/verilator_profcfunc had a zero exit code or showed the expected version
- 5 of 6 passed binary check by having a zero exit code.
- 0 of 6 passed binary check by having the new version present in output.
- found 3.924 with grep in /nix/store/gnmapahqvab762fi885bwhlfhxvpfs81-verilator-3.924
- directory tree listing: https://gist.github.com/eebd214973454154b716fc6a9556b922
- du listing: https://gist.github.com/cb78abec038b5abdae8004ea1edcefc0