Don't error in the unusual case that a file is on the search path by henrymercer · Pull Request #2660 · github/codeql-action
In the unusual case that a file is on the search path, log a warning but don't throw.
I've accomplished this by switching our which implementation to use the standard Actions one within @actions/io but have also submitted a PR to safe-which: chrisgavin/safe-which#14.