Merge FSB analyzers

What does this MR do?

This MR makes SAST use the merged Find sec bugs analyzer (see gitlab-org/security-products/analyzers/find-sec-bugs!6 (closed))

What are the relevant issue numbers?

Refs https://gitlab.com/gitlab-org/gitlab-ee/issues/8401

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary ( MR https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9687 )
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• [ ] Tests added for this feature/bug
• [ ] Job definition updated, if necessary
  • [ ] Auto-DevOps template
  • [ ] Job definition example
  • [ ] CI Templates
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer