feat: enable Python faulthandler to debug segfaults

What does this merge request do and why?

Related issue: https://gitlab.com/gitlab-org/modelops/applied-ml/code-suggestions/ai-assist/-/issues/1589+

Currently, we see the messages that a container terminated due to 11 signal (segfault). The faulthandler https://docs.python.org/3/library/faulthandler.html may help to debug this issue. Let's enable it.