chore: Upgrade release-please-action from v4 to v5

[devin-ai-integration]

Summary

Upgrade release-please-action from v4.4.0 to v5.0.0 to resolve the Node.js 20 deprecation warning. The only meaningful change in v5 is the runtime bump from node20 to node24; all action inputs/outputs remain identical.

Tracked by: SDK-2319

Review & Testing Checklist for Human

• Verify the workflow file still has correct indentation and formatting
• Optionally trigger the workflow via Actions → Run Release Please → Run workflow on this branch to confirm it runs cleanly on node24

Link to Devin session: https://app.devin.ai/sessions/e58ee26521844473ae277348480a32d1

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring