Broken symlink in tree → Traceback

[killermoehre]

Describe the bug
If you have a symlink in your repository pointing to a non-existent file, MegaLinter fails hard.

Traceback (most recent call last):
    File "<frozen runpy>", line 198, in _run_module_as_main
    File "<frozen runpy>", line 88, in _run_code
    File "/usr/local/lib/python3.11/site-packages/megalinter-0.1-py3.11.egg/megalinter/run.py", line 15, in <module>
      linter.run()
    File "/usr/local/lib/python3.11/site-packages/megalinter-0.1-py3.11.egg/megalinter/MegaLinter.py", line 142, in run
      self.collect_files()
    File "/usr/local/lib/python3.11/site-packages/megalinter-0.1-py3.11.egg/megalinter/MegaLinter.py", line 637, in collect_files
      linter.collect_files(filtered_files)
    File "/usr/local/lib/python3.11/site-packages/megalinter-0.1-py3.11.egg/megalinter/Linter.py", line [77](https://$github/$orga/$repo/runs/7598908?check_suite_focus=true#step:5:79)6, in collect_files
      self.files = utils.filter_files(
                   ^^^^^^^^^^^^^^^^^^^
    File "/usr/local/lib/python3.11/site-packages/megalinter-0.1-py3.11.egg/megalinter/utils.py", line 163, in filter_files
      and not file_contains(
              ^^^^^^^^^^^^^^
    File "/usr/local/lib/python3.11/site-packages/megalinter-0.1-py3.11.egg/megalinter/utils.py", line 232, in file_contains
      with open(file_name, "r", encoding="utf-8", errors="ignore") as f:
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  FileNotFoundError: [Errno 2] No such file or directory: '/github/workspace/kiwi/seed-root/0-global/etc/localtime'

To Reproduce
Steps to reproduce the behaviour:

1. create a symlink pointing into the abyss.
   ln -s ../i-dont-exists but-i-do-now
2. git add but-i-do-now
3. git commit
4. git push

Expected behaviour
MegaLinter doesn't fail on broken symlinks