fix(@angular/cli): bump @modelcontextprotocol/sdk to 1.31.0 - #34265

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830, actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02, angular/dev-infra/github-actions/bazel/configure-remote@ab6a00e9a219c2169ae0540cc5a32be5f481e004, pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/