Enable Go FP reduction to Public

What does this MR do?

The MR upgrades the post-analyzer script version to v0.2.0 which enables VET FP reduction for Go(.go) to public.

What are the relevant issue numbers?

• Dependent MR gitlab-org/security-products/post-analyzers/scripts!11 (merged)
• https://gitlab.com/gitlab-org/gitlab/-/issues/378622+

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
• 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