docs: update auth plugin versions to latest releases

[popododo0720]

• opencode-antigravity-auth: 1.1.2 → 1.2.7
• opencode-openai-codex-auth: 4.1.1 → 4.2.0

Fixes #463

Summary

• Update outdated auth plugin versions in all README files.

Changes

• opencode-antigravity-auth: 1.1.2 → 1.2.7
• opencode-openai-codex-auth: 4.1.1 → 4.2.0

Screenshots

Before	After

Testing

bun run typecheck
bun test

Related Issues

[github-actions]

All contributors have signed the CLA. Thank you! ✅
_{Posted by the CLA Assistant Lite bot.}

[greptile-apps]

Greptile Summary

Updated authentication plugin versions across all internationalized README files to their latest npm releases.

• opencode-antigravity-auth: 1.1.2 → 1.2.7
• opencode-openai-codex-auth: 4.1.1 → 4.2.0

All four README files (English, Japanese, Korean, and Chinese) were updated consistently. The changes are purely documentation updates with no code modifications, ensuring users reference the latest stable plugin versions with bug fixes and improvements.

Confidence Score: 5/5

• This PR is safe to merge with no risk
• Documentation-only changes updating plugin versions consistently across all localized README files with no code modifications or logical changes
• No files require special attention

Important Files Changed

Filename	Overview
README.md	Updated auth plugin versions from 1.1.2→1.2.7 and 4.1.1→4.2.0, consistent with npm releases
README.ja.md	Updated auth plugin versions in Japanese docs, matches main README changes
README.ko.md	Updated auth plugin versions in Korean docs, matches main README changes
README.zh-cn.md	Updated auth plugin versions in Chinese docs, matches main README changes

Sequence Diagram

sequenceDiagram
    participant PR as PR Author
    participant Repo as Repository
    participant Docs as README Files
    participant Users as End Users
    
    PR->>Repo: Update plugin versions in issue #463
    PR->>Docs: Change opencode-antigravity-auth 1.1.2→1.2.7
    PR->>Docs: Change opencode-openai-codex-auth 4.1.1→4.2.0
    PR->>Docs: Apply to README.md
    PR->>Docs: Apply to README.ja.md (Japanese)
    PR->>Docs: Apply to README.ko.md (Korean)
    PR->>Docs: Apply to README.zh-cn.md (Chinese)
    Docs-->>Users: Users reference updated versions
    Users->>Users: Install latest plugin versions with bug fixes

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[greptile-apps]

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[cubic-dev-ai]

No issues found across 4 files

Confidence score: 5/5

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

[popododo0720]

I have read the CLA Document and I hereby sign the CLA

[Skyline-23]

@popododo0720 the codex auth plugin is updated to newer version to 4.3.0 and it's usage updated, I think it have to updated