[docs] Add security announcements to 4.4.2 and friends

[mickhawkins]

No description provided.

[netlify]

✅ Deploy Preview for moodledevdocs ready!

Built without sensitive environment variables

Name	Link
🔨 Latest commit	d4834d8
🔍 Latest deploy log	https://app.netlify.com/sites/moodledevdocs/deploys/66c3399c404c1a0008b5d9ca
😎 Deploy Preview	https://deploy-preview-1103--moodledevdocs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🔴 37	🟢 95	🟢 100	🟢 90	🟢 100	Report
/docs/4.4/apis/commonfiles	🔴 49	🟢 93	🟢 100	🟢 100	🟢 100	Report
/general/development/gettingstarted	🟠 71	🟢 95	🟢 100	🟢 90	🟢 100	Report
/general/releases	🟠 78	🟢 95	🟢 100	🟢 100	🟢 100	Report