audit: 2.8.3 -> 2.8.4

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

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

These checks were done:

- built on NixOS
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/aulast had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/aulastlog had a zero exit code or showed the expected version
- /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/ausyscall passed the binary check.
- /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/auvirt passed the binary check.
- /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/audisp-remote passed the binary check.
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/audispd had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/auditctl had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/auditd had a zero exit code or showed the expected version
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/augenrules had a zero exit code or showed the expected version
- /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/aureport passed the binary check.
- /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/ausearch passed the binary check.
- Warning: no invocation of /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin/bin/autrace had a zero exit code or showed the expected version
- 5 of 12 passed binary check by having a zero exit code.
- 2 of 12 passed binary check by having the new version present in output.
- found 2.8.4 with grep in /nix/store/z8k58mpjfb5yrmcscbz3ym983chbqmsn-audit-2.8.4-bin
- directory tree listing: https://gist.github.com/8d6dcaf4f506959d1a86eef7beb7a558
- du listing: https://gist.github.com/c275dcc78169bdf2e405337bca948365