Add SECURITY.md

[akx]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.93%. Comparing base (24f148c) to head (b32461b).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1229   +/-   ##
=======================================
  Coverage   91.93%   91.93%           
=======================================
  Files          27       27           
  Lines        4688     4688           
=======================================
  Hits         4310     4310           
  Misses        378      378           

Flag	Coverage Δ
macos-14-3.10	90.97% <ø> (ø)
macos-14-3.11	90.91% <ø> (ø)
macos-14-3.12	91.12% <ø> (ø)
macos-14-3.13	91.12% <ø> (ø)
macos-14-3.8	90.84% <ø> (ø)
macos-14-3.9	90.90% <ø> (ø)
macos-14-pypy3.10	90.97% <ø> (ø)
ubuntu-24.04-3.10	90.99% <ø> (ø)
ubuntu-24.04-3.11	90.93% <ø> (ø)
ubuntu-24.04-3.12	91.14% <ø> (ø)
ubuntu-24.04-3.13	91.14% <ø> (ø)
ubuntu-24.04-3.8	90.86% <ø> (ø)
ubuntu-24.04-3.9	90.92% <ø> (ø)
ubuntu-24.04-pypy3.10	90.99% <ø> (ø)
windows-2022-3.10	90.98% <ø> (ø)
windows-2022-3.11	90.92% <ø> (ø)
windows-2022-3.12	91.13% <ø> (ø)
windows-2022-3.13	91.13% <ø> (ø)
windows-2022-3.8	90.96% <ø> (ø)
windows-2022-3.9	90.91% <ø> (ø)
windows-2022-pypy3.10	90.98% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[Copilot]

Pull Request Overview

This PR adds a SECURITY.md file to establish a formal security policy for the Babel project, providing clear guidelines for vulnerability reporting and security patch support.

• Defines support policy for security patches, primarily targeting the latest release version
• Establishes multiple channels for vulnerability reporting including GitHub's security advisory form and direct maintainer contact
• Documents backward compatibility approach and downstream distribution considerations

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}