CI: Update macos runners (macos 12.3, gitlab-runner 14.9.1, xcode 13.3)

Why?

• ~9 months since previous update
• cerbero cache update

Depends:

• None at this time

Checklist:

• gst-mac-ci1:
  • gitlab-runner stop
  • update gitlab-runner 14.9.1
  • parallels update (17.1.2)
  • VM copy and update
    • take snapshot
    • macOS 12.3
    • Xcode 13.3
      • first run completed
    • update gitlab-runner 14.9.1
    • update cerbero source cache
    • remove old sources
  • register new vm with tags: gst-ios-15.4, gst-mac-12.3
  • gitlab-runner start
  • smoke test with a CI run: cerbero!837 (merged)
• gst-mac-ci2:
  • gitlab-runner stop
  • update gitlab-runner 14.9.1
  • parallels update (17.1.2)
  • VM copy and update
    • take snapshot
    • macOS 12.3
    • Xcode 13.3
      • first run completed
    • update gitlab-runner 14.9.1
    • update cerbero source cache
    • remove old sources
  • register new vm with tags: gst-ios-15.4, gst-mac-12.3
  • gitlab-runner start
  • smoke test with a CI run: cerbero!837 (merged)