Update to v2.1.6 - #4039

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332, actions/setup-go@0a12ed9d6a96ab950c8f026ed9f722fe0da7ef32, actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

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