Describe the bug
The .gitleaksignore is usually part of the folder to scan, so this is part of external input to the tool.
It is possible to put a symlink to /dev/random into git, this will make the scanner run OOM.

To Reproduce
Steps to reproduce the behavior:
ln -s /dev/random .gitleaksignore

Expected behavior
Either don't follow symlinks or check the input is not malformed.

Basic Info (please complete the following information):

• OS: Linux
• Gitleaks Version: 8.18.2

cc @zricethezav