Add semantic-release or release-please dry-run to validate CHANGELOG format

[Haroldwonder]

Summary

CHANGELOG.md is generated by Release Please, but there is no way to preview what the next release entry will look like without merging a Release PR. Developers cannot validate their commit messages will produce the expected changelog.

Acceptance Criteria

• Add make changelog-preview that runs release-please in dry-run mode and prints the expected next version and changelog entry.
• RELEASE.md documents the preview command.

[davismas23]

@davismas23 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

ill like to solve this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @davismas23 to this issue.

[drips-wave]

Congratulations, @davismas23! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @davismas23: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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