feat(examples): add fastapi bim cde guardrail for retail store roll-outs - #24

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Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b, peter-murray/workflow-application-token-action@d17e3a9a36850ea89f35db16c1067dd2b68ee343. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/