Older garak version gets installed which prevents it from using openai lib correctly.

```
AttributeError: module 'openai' has no attribute 'error'
Error running Garak: Command '['/home/.../miniconda3/envs/localguard/bin/python', '-m', 'garak', '--probes', 'dan,promptinject', '--report_prefix', 'garak_out', '--generations', '5', '--model_type', 'openai', '--model_name', 'liquid/lfm2.5-1.2b']' returned non-zero exit status 1.
```

Proposed fix:
in requirements.txt:
garak==0.13.3