Update the url of the benchmark repo since it is relocated

What does this MR do?

sast-ide-benchmark has been moved to gitlab.com/gitlab-org/secure/ to respect the handbook. This MR updates its url occurrences in sast-ide-integration.

What are the relevant issue numbers?

Sast-ide-benchmark needs to be moved to secure ... (gitlab-org/gitlab#473691 - closed) • Hua Yan • 17.3

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
• Ensure the report version matches the equivalent schema version
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer