fix(ci): bump workflow closing existing PRs

[gabrielmfern]

Summary by cubic

Fixes the version bump workflow that was closing existing PRs by switching changesets/action to git-cli commits and manually configuring the resend-version-bump[bot] git user (setupGitUser: false).

^{Written for commit 21aadf7. Summary will update on new commits.}

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 21aadf7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Requires human review: CI/CD workflow changes are explicitly listed as high-impact and require human review to avoid breaking release processes.}