update action to support macOS

[adamvduke]

use an invocation of find that works on macOS as well as ubuntu

Fixes #2332

Test Plan

macOS before:

$ find -name "flank-links.log"
find: illegal option -- n
usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]
       find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]

macOS after:

$ find . -name "flank-links.log"
./test_runner/flank-links.log
./integration_tests/flank-links.log

ubuntu:

$ find . -name "flank-links.log"
./test_runner/flank-links.log

The important bit is that the find command succeeds.

Checklist

• [ ] Documented
• [ ] Unit tested
• [ ] Integration tests updated

[github-actions[bot]]

Timestamp: 2022-11-18 20:39:45 Buildscan url for ubuntu-workflow run 3500056560