chore: Update outdated GitHub Actions versions

[pgoslatara]

Summary

This PR updates outdated GitHub Action versions by migrating actions/download-artifact from v6 to v7 in the following workflows:

• .github/workflows/prepare-release.yml
• .github/workflows/release.yml
• .github/workflows/release-insiders.yml

Test plan

The changes will be tested in the CI pipeline of the pull request.

[×] Summary
[×] Test plan

[coderabbitai]

Walkthrough

Three GitHub Actions workflow files have been updated to use a newer version of the download-artifact action. The files prepare-release.yml, release-insiders.yml, and release.yml all contain changes to their "Download artifacts" steps, replacing actions/download-artifact@v6 with actions/download-artifact@v7. Each file has one line added and one line removed, reflecting this version bump. No other workflow logic or steps have been modified.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: updating outdated GitHub Actions versions across multiple workflows.
Description check	✅ Passed	The description clearly relates to the changeset, providing specific details about which action was updated and which workflows were affected.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}