Scan fails with permission issue

When the project directory contains a file unrelated to the test report, the action fails if it does not have permission to the unrelated file.

Sample output:
```
Listing all files tracked by git
Found 153 files tracked by GitHub
Using test report parser 'java-junit'
Error: EACCES: permission denied, scandir '/runner/_work/path/to/unrelated/file'
```