Make SAST registries private

Why are we doing this work

As described in #470641 (closed), the container registry for development projects in the Secure group must be private.

Implementation plan

• Make the container registry private for the following projects
  • semgrep
  • sobelow
  • spotbugs
  • bandit
  • brakeman'
  • eslint
  • flawfinder
  • gosec
  • mobsf
  • nodejs-scan
  • phpcs-security-audit
  • security-code-scan