ci: pin stable bot automerge workflow

[ANcpLua]

Pins the auto-merge caller to renovate-config PR #12, which immediately merges stable non-major dependency bot PRs and skips major/prerelease-looking updates.

Summary by CodeRabbit

• Chores
  • Updated GitHub Actions workflow configuration to use a newer version of the auto-merge workflow.

[coderabbitai]

Caution

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

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Run ID: ce3dc78a-eec2-4e84-a069-e8b7edef3665

📥 Commits

Reviewing files that changed from the base of the PR and between f612867 and e35f989.

📒 Files selected for processing (1)

• .github/workflows/auto-merge.yml

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to data retention organization setting

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📝 Walkthrough

Walkthrough

Updated the Auto-merge GitHub Actions workflow to reference a newer commit of the reusable workflow from the renovate-config repository. Line 22 contains the uses directive pointing to the upstream reusable workflow, with the commit hash incremented and the associated comment reference updated from PR #11 to PR #12. The workflow structure and dependencies remain unchanged. This is a pointer update to incorporate updates from the reusable workflow source.

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_{Comment @coderabbitai help to get the list of available commands and usage tips.}