chore(deps): bump node from 24.20.0-alpine3.24 to 26.9.0-alpine3.24 in /compileflow-workbench/docker - #166

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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/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/