fix: set draft: false on actions-security page to restore publication

[Copilot]

PR #91 inadvertently set draft: true on the actions-security page, which would suppress it from the generated site despite the existing publishDate: 2024-08-16. This applies all content changes from PR #91 while correcting the draft flag.

Changes

• Merged PR Add recommendations for runner groups and labels #91 additions (runner segregation recommendations, ruleset guidance, author attribution)
• Reverted draft: true → draft: false to keep the page published

# Before
draft: true # Set to false when ready to publish

# After
draft: false # Set to false when ready to publish

[konstruktoid]

@KittyChiu so the tests doesn't actually run on drafts? and this PR doesn't seem to actually change the draft status.
I'll update #91 directly