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  • Updated the auto-merge workflow to use a newer version of the reusable workflow configuration.

[coderabbitai]

Caution

Review failed

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 5edbc25 and de1a8dc.

📒 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 .github/workflows/auto-merge.yml to reference a newer commit hash of the reusable workflow. The change is confined to line 22, updating the uses directive from commit 8ccccb6e... to 2ca117da3e.... No structural changes to the workflow configuration itself. This is a workflow infrastructure update with no impact on source-level artifacts or exported APIs.

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