fix dismiss all Dependabot review requests

[Pigbibi]

Policy

All review requests targeting Pigbibi on Dependabot-authored PRs are intentionally dismissed, including later manual re-requests. Major dependency updates remain open because the existing Dependabot auto-merge workflow excludes semver-major updates, but they no longer generate review-request notifications.

What changed

• handle review_requested events for both dependabot[bot] and app/dependabot PR authors
• remove the request regardless of the event actor
• keep API failures visible while treating an already-removed request as success
• do not checkout or execute PR code

Validation

• bash syntax check
• git diff --check

[github-actions]

🤖 Codex PR Review

✅ Merge allowed: No issues found

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Review by Codex PR Review bot • PR

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: c0d52b05ed

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".