Update V4 RELEASE.md

[oncloudit]

Summary by CodeRabbit

• Chores
  • Released version v4.0.2 with CometBFT dependency update (v0.38.15 → v0.38.21).

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[coderabbitai]

📝 Walkthrough

Walkthrough

The pull request updates the RELEASE.md file to reflect version v4.0.2, replacing the ibc-go dependency update with a cometbft version bump and updating the changelog link to reference the new release.

Changes

Cohort / File(s)	Summary
Release Notes Update RELEASE.md	Version bumped from v4.0.1 to v4.0.2; replaced ibc-go dependency update (v8.6.1 → v8.7.0) with cometbft update (v0.38.15 → v0.38.21); updated changelog link range

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Suggested reviewers

• dreamer-zq
• mitch1024

Poem

🐰 Version four point oh point two,
With cometbft shiny and new,
Dependencies bumped with care,
Release notes everywhere,
Another hop forward, it's true! 🎉

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Update V4 RELEASE.md' accurately describes the main change - updating the RELEASE.md file with version v4.0.2 release notes including dependency bumps and changelog links.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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